Editing Ailments

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'''Ailments''' are [[health]] conditions that cannot be treated completely using medicine alone. For physical damage, see [[injury]]. For treatable conditions, see [[disease]].

"MTB" stands for "Mean Time Between", and is how it's presented in the game files.

Some conditions can give rise to other conditions; the risk of this happening will diminish if the condition is treated.

Most permanent ailments are curable with body part replacements or usage of the [[healer mech serum]].

== Chronic ==
Ailments that come with age. Either non-fatal, or progresses extremely slowly towards fatality compared to infectious diseases.

=== Alzheimer's ===
A brain disease usually associated with aging. Alzheimer's disease causes progressive degradation in the ability to think and remember. Patients are known to forget close relatives and sometimes wander around in confusion.

Alzheimer's progresses by 0.003 per day, meaning that it will take 333.33 days for it to reach full severity from when it first appears.

{| class="wikitable"
|-
! Stage !! Begins at !! Symptoms
|-
| '''Alzheimer's (minor)''' || ≥0% severity ||
* -5% part efficiency
* Confused wandering (''MTB of 12 days'')
* Forget memory (''MTB of 7 days'')
|-
| '''Alzheimer's (minor)''' || ≥20% severity ||
* -10% part efficiency
* Confused wandering (''MTB of 9 days'')
* Forget memory (''MTB of 4 days'')
* ''0.15%'' of conditional thoughts nullified
|-
| '''Alzheimer's (major)''' || ≥50% severity ||
* -15% part efficiency
* Confused wandering (''MTB of 7 days'')
* Forget memory (''MTB of 2 days'')
* ''0.5%'' of conditional thoughts nullified
|-
| '''Alzheimer's (major)''' || ≥80% severity ||
* -20% part efficiency
* Confused wandering (''MTB of 4 days'')
* Forget memory (''MTB of 0.8 days'')
* ''1%'' of conditional thoughts nullified
|}

A human pawn can first get Alzheimer's at age 34.
{| class="wikitable"
|-
! Alzheimers chance
|-
| {{GraphChart
|width=400
|height=100
|type=line
|x=0, 33.6, 56, 72, 80, 120
|y=0, 0, 0.061, 0.12, 0.2, 0.3 
|xAxisTitle = Pawn age (years)
|yAxisTitle = Chance/Birthday (%)
}}
|}

=== Asthma ===
A chronic health condition where inflammation causes the airways to narrow, restricting the flow of oxygen to the lungs. Unlike other chronic diseases, asthma can be contracted at almost any age, meaning it's not terribly uncommon to have an asthmatic person some time down the line.

When not treated, it progresses by a rate of 0.25 per day, meaning it will take 2 days to reach full severity (50%).

Good treatment will reduce the rate of progression by up to 0.8, meaning it will regress by 0.55 a day; it can be returned to its initial severity, but cannot be cured completely.

Asthma's severity will fluctuate depending on the quality of treatment received, with a treatment quality of 32% beginning to regress the stages of asthma (the higher, the better).

{| class="wikitable"
|-
! Stage !! Begins at !! Symptoms
|-
| '''Asthma (minor)''' || ≥ 0% severity  || -10% part efficiency
|-
| '''Asthma (major)''' || ≥ 30% severity || -30% part efficiency
|-
| '''Asthma (major)''' || ≥ 45% severity || -50% part efficiency
|}

Treatment:
* The severity of asthma can be reduced with treatment, which can be given every 420,000 ticks (around 7 days). One treatment applies to both lungs.
* Asthma can be cured by replacing the lung with a non-diseased one.

A human pawn can first get asthma at any age.
{| class="wikitable"
|-
! Asthma chance
|-
| {{GraphChart
|width=400
|height=100
|type=line
|x=0, 16, 24, 40, 120
|y=0, 0.048, 0.096, 0.1344, 0.1344
|xAxisTitle = Pawn age (years)
|yAxisTitle = Chance/Birthday (%)
}}
|}

=== Bad back ===
Degradation in the spinal column and surrounding musculature. This makes it hard to move and bend smoothly.

{| class="wikitable"
|-
! Ailment !! Symptoms
|-
| '''Bad back''' || 
* -30% [[Moving]]
* -10% [[Manipulation]]
|}

A bad back can be cured by installing a [[bionic spine]], or with the use of [[biosculpter pod]]'s bioregeneration cycle{{IdeologyIcon}}.

A human pawn can first get a bad back at age 41.
{| class="wikitable"
|-
! Bad back chance
|-
| {{GraphChart
|width=400
|height=100
|type=line
|x=0, 40, 50, 60, 70, 80, 120
|y=0, 0, 0.93, 1.395, 1.395, 1.86, 1.86
|xAxisTitle = Pawn age (years)
|yAxisTitle = Chance/Birthday (%)
}}
|}

=== Cataract ===
Milky-looking opacity in the eye. Cataracts impair vision.
{| class="wikitable"
|-
! Ailment !! Symptoms
|-
| '''Cataract''' || -50% part efficiency in the affected eye. This results in 50% [[sight]] if both eyes are affected.
|}
Cataracts can be cured by replacing the affected eye with a [[bionic eye|bionic]] or [[archotech eye|archotech]] eye.

A human pawn can first get a cataract at age 49.
{| class="wikitable"
|-
! Cataract chance
|-
| {{GraphChart
|width=400
|height=100
|type=line
|x=0, 48, 60, 70, 120
|y=0, 0, 0.53, 1.1045, 1.1045
|xAxisTitle = Pawn age (years)
|yAxisTitle = Chance/Birthday (%)
}}
|}

=== Carcinoma ===
A carcinoma (or cancer) is where mutated cells uncontrollably divide to form tumours, which then 'crowd out' normal bodily cells and hinder bodily function in that area. Carcinomas can be surgically removed (requires a surgeon with at least 10 medicine skill), or healthy parts can be transplanted in some cases. Ordinary treatment (which can be performed by anybody) will prolong the development of a carcinoma or speed up remission, with better treatment being more effective. Installed [[nuclear stomach]]s {{RoyaltyIcon}} create a carcinoma on the torso with an MTB of 120 days.

A carcinoma typically starts out at 30% severity. There is a 30% chance that a carcinoma won't cause any pain whatsoever.

A cancer has 3 stages; growing, stable and remission.
* When growing, it progresses by 0.003 per day, multiplied by a factor of 0.45 - 1.65.
* When stable, it neither grows nor regresses on its own. 
* When in remission, it regresses by 0.002 per day, multiplied by a factor of 0.7 - 1.5.

Good treatment can slow progression by 0.0027 per day, meaning that the carcinoma will grow slower when in growing stage, regress slowly when stable (or for very slow-growing carcinomas), and regress quickly when in remission.
{| class="wikitable"
|-
! Stage !! Begins at !! Symptoms
|-
| '''Carcinoma (minor)''' || ≥0% severity ||
* Little pain (+10%)
* -10% part efficiency
|-
| '''Carcinoma (minor)''' || ≥15% severity ||
* Moderate pain (+20%)
* -25% part efficiency
|-
| '''Carcinoma (major)''' || ≥40% severity ||
* Moderate pain (+35%)
* -50% part efficiency
|-
| '''Carcinoma (major)''' || ≥60% severity ||
* Acute pain (+50%)
* -80% part efficiency
|-
| '''Carcinoma (extreme)''' || ≥80% severity ||
* Acute pain (+60%)
* -90% part efficiency
|-
| '''Carcinoma (extreme)''' || 100% severity ||
* Affected part is destroyed
|}

Treatment:
* Treated every {{ticks|240000}}
* Surgical removal; this needs 4 medicine (regular or above) and a doctor of medicine skill 10 or above, and has only 70% base chance to succeed

A human pawn can first get a carcinoma from normal aging at age 23. Carcinomas from other sources including [[toxic buildup]] and [[nuclear stomach]]s {{RoyaltyIcon}} can happen at any age.
{| class="wikitable"
|-
! Carcinoma chance
|-
| {{GraphChart
|width=400
|height=100
|type=line
|x=0, 22.4, 80, 120
|y=0, 0, 0.11, 0.15
|xAxisTitle = Pawn age (years)
|yAxisTitle = Chance/Birthday (%)
}}
|}

=== Dementia ===
Dementia is simply the functionality of the brain declining, and affects all cognitive functions.

It can only be healed with [[luciferium]] or a [[healer mech serum]].
{| class="wikitable"
|-
! Ailment !! Symptoms
|-
| '''Dementia''' ||
* Impaired brain function (-15% part efficiency)
* Impaired speech (-25%)
** Net loss of 40% speech including brain function loss
* Impaired hearing (-25%)
** Net loss of 40% hearing including brain function loss
* Confused wandering (''MTB of 5 days'')
* Slightly accelerated skill loss
|}
<!--
according to a curve, in loss of a skill level per day:
**0.05% at level 4
**0.15% at level 12
**0.25% at level 20
-->

A human pawn can first get dementia from aging at age 69. Dementia from other sources including [[toxic buildup]] can happen at any age.
{| class="wikitable"
|-
! Dementia chance
|-
| {{GraphChart
|width=400
|height=100
|type=line
|x=0, 68, 76, 92, 120
|y=0, 0, 0.93, 9.3, 9.3
|xAxisTitle = Pawn age (years)
|yAxisTitle = Chance/Birthday (%)
}}
|}

=== Frail ===
Generalized loss of muscle and bone density. Note that frail ''can'' stack with bad back.

{| class="wikitable"
|-
! Ailment !! Symptoms
|-
| '''Frail''' || 
* -30% [[Moving]]
* -30% [[Manipulation]]
|}

Can only be cured with [[luciferium]], a [[healer mech serum]], or with the use of [[biosculpter pod]]'s bioregeneration cycle{{IdeologyIcon}}.

A human pawn can first get frail at age 51.
{| class="wikitable"
|-
! Frail chance
|-
| {{GraphChart
|width=400
|height=100
|type=line
|x=0, 50, 60, 70, 120  
|y=0, 0, 1.395, 2.604, 2.604
|xAxisTitle = Pawn age (years)
|yAxisTitle = Chance/Birthday (%)
}}
|}

=== Artery blockage ===
A blockage in one of the critical arteries in the [[heart]]. Heart artery blockages randomly induce [[#Heart attack|heart attacks]]. Artery blockages can be treated by replacing the heart with a [[heart|natural]], [[prosthetic heart|prosthetic]] or [[bionic heart|bionic]] replacement, with a [[healer mech serum]], with [[luciferium]], or with the use of [[biosculpter pod]]'s bioregeneration cycle{{IdeologyIcon}}.

Artery blockages progress by a base of 0.0007 per day, multiplied by a random factor between 0.5 - 3.
This means that artery blockages can take anywhere from 7.9 to 47.6 in-game years from onset to become fatal on its own.

Artery blockages can be treated by replacing the heart.

{| class="wikitable"
|-
! Stage !! Begins at !! Symptoms
|-
| '''Artery blockage (minor)''' || ≥0% severity ||
* -5% part efficiency
* [[#Heart attack|Heart attack]] (''MTB of 600 days'')
|-
| '''Artery blockage (minor)''' || ≥20% severity ||
* -10% part efficiency
* [[#Heart attack|Heart attack]] (''MTB of 500 days'')
|-
| '''Artery blockage (major)''' || ≥40% severity ||
* -15% part efficiency
* [[#Heart attack|Heart attack]] (''MTB of 300 days'')
|-
| '''Artery blockage (major)''' || ≥60% severity ||
* -35% part efficiency
* [[#Heart attack|Heart attack]] (''MTB of 200 days'')
|-
| '''Artery blockage (extreme)''' || ≥90% severity ||
* -60% part efficiency
* [[#Heart attack|Heart attack]] (''MTB of 120 days'')
|-
| '''Artery blockage (extreme)''' || 100% severity ||
* Death
|}

A human pawn can first get an artery blockage at age 21.
{| class="wikitable"
|-
! Artery blockage chance
|-
| {{GraphChart
|width=400
|height=100
|type=line
|x=0, 20, 24, 40, 80, 120  
|y=0, 0, 0.1, 0.145, 0.16, 0.17
|xAxisTitle = Pawn age (years)
|yAxisTitle = Chance/Birthday (%)
}}
|}

=== Hearing loss ===
Inability to hear quiet sounds due to degradation of hair cells in the cochlea.
{| class="wikitable"
|-
! Ailment !! Symptoms
|-
| '''Hearing loss''' || 
* -50% part efficiency (results in 50% [[hearing]] if both ears are affected)
|}

Can be partially mitigated with one or two [[cochlear implant]]s
Can be completely mitigated with a single [[bionic ear]], even if the other ear remains affected

A human pawn can first get hearing loss at age 49.
{| class="wikitable"
|-
! Hearing loss chance
|-
| {{GraphChart
|width=400
|height=100
|type=line
|x=0, 48, 60, 70, 120
|y=0, 0, 0.53, 1.11045, 1.11045
|xAxisTitle = Pawn age (years)
|yAxisTitle = Chance/Birthday (%)
}}
|}

== Acute ==
Some ailments arise as a result of an acute lack of food or exposure to extreme temperatures. These ailments can only be treated by addressing the underlying cause (e.g. providing food or moving to more comfortable temperatures).

=== Malnutrition ===
When a pawn's [[Eating|food]] meter reaches 0%, they will begin to suffer from [[malnutrition]], shown on the health tab. When a colonist is starving they will prioritize eating over other activities, including firefighting and doctoring.
{| class="wikitable"
|-
! Stage !! Begins at !! Symptoms
|-
| '''Malnutrition (trivial)''' || 0.0 days since hunger hit zero ||
* -5% [[consciousness]]
* +50% hunger rate
* 1.5x more likely to start a social fight
|-
| '''Malnutrition (minor)''' || 1.2 days since hunger hit zero ||
* -10% [[consciousness]]
* +60% hunger rate
* 2x more likely to start a social fight
|-
| '''Malnutrition (moderate)''' || 2.4 days since hunger hit zero ||
* -20% [[consciousness]]
* +60% hunger rate
* 2.5x more likely to start a social fight
|-
| '''Malnutrition (severe)''' || 3.5 days since hunger hit zero ||
* -30% [[consciousness]]
* +60% hunger rate
* 3x more likely to start a social fight
|-
| '''Malnutrition (extreme)''' || 4.7 days since hunger hit zero ||
* Unconscious ([[consciousness]] max. 10%)
|-
| '''Malnutrition (extreme)''' || 5.9 days since hunger hit zero ||
* Death
|}
<!-- The duration of the different symptoms are approximate -->
<!-- The exact limits are 0, 0.2, 0.4, 0.6, and 0.8 severity, with severity increasing by 0.17 per day -->

=== Blood loss ===
A reduction in the normal blood volume. Minor blood loss has relatively mild effects, but when blood loss becomes severe, oxygen transport becomes badly impaired and the victim loses the ability to move. Extreme blood loss leads to death.

Blood loss occurs when a pawn has untreated bleeding [[#Injury|wounds]]. Bleeding wounds are identified on the health tab by a blood icon and a tooltip shows the bleeding rate. Total blood loss is listed under whole body and its tooltip shows the total blood loss. Overall bleeding rate is shown at the bottom.

Once all bleeding wounds are healed the pawn will start recovering from blood loss. It takes up to 4 days to fully recover.

{| class="wikitable"
|-
! Stage !! Begins at !! Symptoms
|-
| '''Blood loss (minor)''' || ≥15% blood loss || 
*-10% [[Consciousness]]
|-
| '''Blood loss (moderate)''' || ≥30% blood loss || 
*-20% [[Consciousness]]
|-
| '''Blood loss (severe)''' || ≥45% blood loss || 
*-40% [[Consciousness]]
|-
| '''Blood loss (extreme)''' || ≥60% blood loss || 
* [[Consciousness]] 10% max.
|-
| '''Blood loss (extreme)''' || 100% blood loss || 
* Death
|}

=== Heatstroke ===
Heat stroke occurs when a pawn has prolonged exposure to [[temperature]]s 10°C above their [[maximum comfortable temperature]], and recovery occurs in temperatures less than the maximum comfortable temperature.
Note that it is possible for a pawn to have both heatstroke and hypothermia at the same time if time is spent in both extreme heat and cold - their severities are unrelated.

Pawns additionally take periodic burn damage in temperatures more than 150°C above their maximum comfortable temperature.
====Severity Increase====
<!-- Data from Verse/HediffGiver_Heat.cs !-->
The procedure for determining severity growth every 60-tick interval is given by:
# Take the amount by which the ambient temperature exceeds the pawn's maximum safe temperature (which is the maximum comfortable temperature +10°C).
# Pass the amount through the curve shown below to obtain the effective temperature excess. Note that for amounts from 0 to 25 °C, this doesn't result in a change.
# Multiply the excess by <code>6.45e-5</code> to obtain the severity growth this interval (60 ticks, 1 second).
# If the growth is less than <code>0.000375</code>, set it to that number. This sets a minimum amount the severity increases by for temperatures in the range of 10 to 15.814°C above the maximum comfortable temperature.
:<code>Increase in heatstroke severity every 60 ticks = max(0.000375, 0.0000645×effective_temperature_curve(<i>ambient_temperature</i> - (<i>maximum_comfortable_temperature</i> + 10°C)))</code>
::<code><i>where </i>effective_temperature_curve()<i> is a post-processing curve with points</i>: (0, 0), (25, 25), (50, 40), (100, 60), (200, 80), (400, 100), (4000, 1000).</code>
{| class="wikitable"
|-
! Effective temperature curve
|-
| {{GraphChart
|width=600
|height=150
|type=line
|showSymbols=1
|x=0, 25, 50, 100, 200, 400, 4000
|y=0, 25, 40,  60,  80, 100, 1000
|xAxisMax = 1000
|yAxisMax = 250
|xAxisTitle = Temperature excess (°C)
|yAxisTitle = Effective temperature excess
}}
|}
{{GraphChart
|width=200
|height=200
|type=line
|x=10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100
|y=64.0, 64.0, 64.0, 62.0, 46.5, 37.2, 31.0, 26.6, 23.3, 20.7, 18.6, 16.9, 15.5, 14.5, 13.9, 13.3, 12.7, 12.2, 11.8, 11.3, 10.9, 10.6, 10.2, 9.9, 9.6, 9.3, 9.1, 8.9, 8.8, 8.6, 8.5, 8.3, 8.2, 8.0, 7.9, 7.8, 7.6, 7.5, 7.4, 7.3, 7.2, 7.0, 6.9, 6.8, 6.7, 6.6
|xAxisTitle = Ambient Temperature - Maximum Comfortable Temperature (°C)
|yAxisTitle = Time to 100% Severity (hours)
}}
<div style="display:inline-table; vertical-align:top;">

{| class="wikitable"
|-class=static-row-header style=vertical-align:bottom
! style=max-width:20em | Ambient Temperature - Maximum Comfortable Temperature (°C)
! style=max-width:15em | Growth per 60 ticks
! style=max-width:15em | Time to 100% severity (ticks)
! style=max-width:15em | Time to 100% severity (in-game time)
|-
| 0 || 0 || - || -
|-
| 5 || 0 || - || - 
|-
| 10 || 0.000375 || 160000 || 2.7 days
|-
| 15 || 0.000375 || 160000 || 2.7 days
|-
| 20 || 0.000645 || 93023 || 1.6 days
|-
| 25 || 0.000967 || 62016 || 1 day
|-
| 100 || 0.003612 || 16611 || 6.6 hours
|-
| 300 || 0.005386 || 11141 || 4.5 hours
|-
| 4000 || 0.064339 || 933 || 0.4 hours
|}
</div>
====Severity Decrease====
If the ambient temperature is less than the maximum comfortable temperature, the amount the severity will decrease every 60-tick interval is given by:
:<code>Decrease in heatstroke severity every 60 ticks = max(0.0015, min(0.015, 0.027×heatstroke_severity))</code>
This means that as long as the ambient temperature is less than the maximum comfortable temperature, heatstroke recovery is independent of temperature, but severity decreases at its fastest when it is above 50%, and at its slowest below 5.6%. Full recovery from near-100% severity occurs after 151 real-time seconds, or 3.6 in-game hours.
{{GraphChart
|width=200
|height=200
|type=line
|x= 0, 0.024, 0.048, 0.072, 0.096, 0.12, 0.144, 0.168, 0.192, 0.216, 0.24, 0.264, 0.288, 0.312, 0.336, 0.36, 0.384, 0.408, 0.432, 0.456, 0.48, 0.504, 0.528, 0.552, 0.576, 0.6, 0.624, 0.648, 0.672, 0.696, 0.72, 0.744, 0.768, 0.792, 0.816, 0.84, 0.864, 0.888, 0.912, 0.936, 0.96, 0.984, 1.008, 1.032, 1.056, 1.08, 1.104, 1.128, 1.152, 1.176, 1.2, 1.224, 1.248, 1.272, 1.296, 1.32, 1.344, 1.368, 1.392, 1.416, 1.44, 1.464, 1.488, 1.512, 1.536, 1.56, 1.584, 1.608, 1.632, 1.656, 1.68, 1.704, 1.728, 1.752, 1.776, 1.8, 1.824, 1.848, 1.872, 1.896, 1.92, 1.944, 1.968, 1.992, 2.016, 2.04, 2.064, 2.088, 2.112, 2.136, 2.16, 2.184, 2.208, 2.232, 2.256, 2.28, 2.304, 2.328, 2.352, 2.376, 2.4, 2.424, 2.448, 2.472, 2.496, 2.52, 2.544, 2.568, 2.592, 2.616, 2.64, 2.664, 2.688, 2.712, 2.736, 2.76, 2.784, 2.808, 2.832, 2.856, 2.88, 2.904, 2.928, 2.952, 2.976, 3.0, 3.024, 3.048, 3.072, 3.096, 3.12, 3.144, 3.168, 3.192, 3.216, 3.24, 3.264, 3.288, 3.312, 3.336, 3.36, 3.384, 3.408, 3.432, 3.456, 3.48, 3.504, 3.528, 3.552, 3.576, 3.6, 3.624
|y= 1, 0.985, 0.97, 0.955, 0.94, 0.925, 0.91, 0.895, 0.88, 0.865, 0.85, 0.835, 0.82, 0.805, 0.79, 0.775, 0.76, 0.745, 0.73, 0.715, 0.7, 0.685, 0.67, 0.655, 0.64, 0.625, 0.61, 0.595, 0.58, 0.565, 0.55, 0.53515, 0.5207, 0.50664, 0.49296, 0.47965, 0.4667, 0.4541, 0.44184, 0.42991, 0.4183, 0.40701, 0.39602, 0.38533, 0.37492, 0.3648, 0.35495, 0.34537, 0.33604, 0.32697, 0.31814, 0.30955, 0.30119, 0.29306, 0.28515, 0.27745, 0.26996, 0.26267, 0.25558, 0.24868, 0.24196, 0.23543, 0.22907, 0.22289, 0.21687, 0.21101, 0.20532, 0.19977, 0.19438, 0.18913, 0.18402, 0.17906, 0.17422, 0.16952, 0.16494, 0.16049, 0.15615, 0.15194, 0.14784, 0.14384, 0.13996, 0.13618, 0.1325, 0.12893, 0.12545, 0.12206, 0.11876, 0.11556, 0.11244, 0.1094, 0.10645, 0.10357, 0.10078, 0.09806, 0.09541, 0.09283, 0.09033, 0.08789, 0.08551, 0.0832, 0.08096, 0.07877, 0.07665, 0.07458, 0.07256, 0.0706, 0.0687, 0.06684, 0.06504, 0.06328, 0.06157, 0.05991, 0.05829, 0.05672, 0.05519, 0.05369, 0.05219, 0.05069, 0.04919, 0.04769, 0.04619, 0.04469, 0.04319, 0.04169, 0.04019, 0.03869, 0.03719, 0.03569, 0.03419, 0.03269, 0.03119, 0.02969, 0.02819, 0.02669, 0.02519, 0.02369, 0.02219, 0.02069, 0.01919, 0.01769, 0.01619, 0.01469, 0.01319, 0.01169, 0.01019, 0.00869, 0.00719, 0.00569, 0.00419, 0.00269, 0.00119, 0
|xAxisTitle = Time (hours)
|yAxisTitle = Heatstroke severity
}}
====Symptoms====
{| class="wikitable"
|-
! Stage !! Begins at !! Symptoms
|-
| '''Heatstroke (initial)''' || >0.04 Severity || 
* [[Consciousness]] -5%
|-
| '''Heatstroke (minor)'''   || >0.20 Severity || 
* [[Consciousness]] -10%
* [[Moving]] -10%
|-
| '''Heatstroke (serious)''' || >0.35 Severity || 
* [[Consciousness]] -20% 
* [[Moving]] -30%
* [[Pain]] +15%
|-
| '''Heatstroke (extreme)''' || >0.62 Severity || 
* [[Consciousness]] max. 10%
* [[Pain]] +30%
|-
| '''Heatstroke (100%)'''    || =1.00 Severity || 
* Death
|}

=== Hypothermia ===
Hypothermia occurs when a pawn has prolonged exposure to [[temperature]]s 10°C below their [[minimum comfortable temperature]]. [[Insectoids]] don't experience hypothermia, but instead get [[hypothermic slowdown]].

Note that it is possible for a pawn to have both heatstroke and hypothermia at the same time if time is spent in both extreme heat and cold - their severities are unrelated.

<!-- Data from Verse/HediffGiver_Hypothermia.cs !-->
The rate of severity growth depends on the difference below the pawn's minimum safe temperature and the ambient temperature. The specific algorithm is:
# Take the amount by which the pawn's minimum safe temperature (which is the [[minimum comfortable temperature]] -10°C) exceeds the ambient temperature.
# Multiply the excess by <code>6.45e-5</code> to obtain the severity growth this interval. Note that unlike hyperthermia, hypothermia calculations don't use a postprocessing curve.
# If the growth is less than <code>0.00075</code>, set it to that number. As a result, temperatures between 10°C and 21.63°C less than the minimum comfortable temperature all have the same severity growth.
Expressed as a formula, this is:
:<code>Increase in hypothermia severity every 60 ticks = max(0.00075, (<i>degrees_below_comfortable</i> - 10)*0.0000645)</code>
{{GraphChart
|width=200
|height=200
|type=line
|x = 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100
|y = 32.0, 32.0, 32.0, 32.0, 32.0, 32.0, 31.0, 26.6, 23.3, 20.7, 18.6, 16.9, 15.5, 14.3, 13.3, 12.4, 11.6, 10.9, 10.3, 9.8, 9.3, 8.9, 8.5, 8.1, 7.8, 7.4, 7.2, 6.9, 6.6, 6.4, 6.2, 6.0, 5.8, 5.6, 5.5, 5.3, 5.2, 5.0, 4.9, 4.8, 4.7, 4.5, 4.4, 4.3, 4.2, 4.1
|xAxisTitle = Minimum Comfortable Temperature - Ambient Temperature(°C)
|yAxisTitle = Time to 100% Severity (hours)
|yAxisMin = 0
}}
<div style="display:inline-table; vertical-align:top;">
{| class="wikitable"
|-class=static-row-header style=vertical-align:bottom
! style=max-width:20em | Minimum Comfortable Temperature - Ambient Temperature(°C)
! style=max-width:15em | Growth per 60 ticks
! style=max-width:15em | Time to 100% severity (ticks)
! style=max-width:15em | Time to 100% severity (in-game hours)
|-
| 0 || 0 || - || -
|-
| 5 || 0 || - || - 
|-
| 10 || 0.00075 || 80000 || 32.0
|-
| 20 || 0.00075 || 80000 || 32.0
|-
| 25 || 0.000967 || 62016 || 24.8
|-
| 50 || 0.00258 || 23256 || 9.3
|-
| 100 || 0.005805 || 10336 || 4.1
|-
| 300 || 0.018705 || 3208 || 1.3
|}
</div>
Recovery from hypothermia uses the same process as recovery from heastroke, which results in complete recovery within 3.6 in-game hours:
:<code>Decrease in hypothermia severity every 60 ticks = max(0.0015, min(0.015, 0.027×hypothermia_severity))</code>
{| class="wikitable"
|-
! Stage !! Begins at !! Symptoms
|-
| '''Hypothermia (shivering)''' || >0.04 Severity || 
* [[Consciousness]] -5%
* [[Manipulation]] -8%
|-
| '''Hypothermia (minor)'''   || >0.20 Severity || 
* [[Consciousness]] -10%
* [[Manipulation]] -20%
* [[Moving]] -10%
|-
| '''Hypothermia (serious)''' || >0.35 Severity || 
* [[Consciousness]] -20% 
* [[Manipulation]] -50%
* [[Moving]] -30%
* [[Pain]] +15%
|-
| '''Hypothermia (extreme)''' || >0.62 Severity || 
* [[Consciousness]] max. 10%
* [[Pain]] +30%
|-
| '''Hypothermia (100%)'''    || =1.00 Severity || 
* Death
|}

=== Hypothermic slowdown ===
{{quote|A special biological state used by some creatures to survive extreme cold. Instead of trying to stay warm, the creature's body chemistry adapts to prevent internal freezing despite very low temperature. Bodily functions are slowed and capacities are reduced, but the cold does no permanent damage. Some biologists call it a wakeful form of hibernation.}}

[[Insectoids]] avoid hypothermia and experience hypothermic slowdown instead with similar penalties but avoiding death at 100% and no [[frostbite]].

Slowdown value increases many times above 100% with apparently no upper limit. When defrosting insects this total value is used so defrost time is proportional to total time frozen.

{| class="wikitable"
|-
! Stage !! Begins at !! Symptoms
|-
| '''Hypothermia (minor)''' || >0.04 Severity || 
* [[Consciousness]] -5%
* [[Moving]] -8%
|-
| '''Hypothermia (moderate)'''   || >0.20 Severity || 
* [[Consciousness]] -20%
* [[Moving]] -20%
* [[Manipulation]] -20%
* Hunger rate -10%
|-
| '''Hypothermia (serious)''' || >0.35 Severity || 
* [[Consciousness]] -40% 
* [[Moving]] -40%
* [[Manipulation]] -50%
* Hunger rate -40%
|-
| '''Hypothermia (extreme)''' || >0.62 Severity || 
* [[Consciousness]] max. 10%
* Hunger rate -95%
|}

== Drug damage ==
These ailments are caused by excess drug use.

=== Cirrhosis ===
A degenerative liver disease caused by excessive alcohol consumption.
An otherwise healthy pawn with cirrhosis will have an [[immunity gain speed]] of 70%, making them extremely vulnerable to disease.

{| class="wikitable"
|-
! Ailment !! Symptoms
|-
| '''Cirrhosis''' || 
* -60% part efficiency (liver)
* Slight [[pain]] (+15%)
* -10% [[Moving]]
|}

=== Chemical damage ===
Permanent damage that occurs as a result of drug overdose or tolerance. There are two variants.

{| class="wikitable"
|-
! Ailment !! Symptoms
|-
| '''Chemical damage (moderate)''' || 
* -50% part efficiency
* Always applied to the brain
|-
| '''Chemical damage (severe)''' || 
* -80% part efficiency
* Always applied to the kidneys
|}

Treatment:
* Kidney chemical damage can be cured by replacing with a non-damaged kidney

== General ==
These ailments appear in gameplay, and usually wear off on their own (except death-causing ones).

=== Cryptosleep sickness ===
After-effects of using a cryptosleep pod. Cryptosleep suspends and replaces many bodily functions in order to prevent aging and death. Upon exiting cryptosleep, the body takes time to restart and rebalance its natural metabolic processes. While this is ongoing, the patient suffers from nausea, dizziness, and a sense of fuzziness in the mind.

Occurs after having been in a [[ship cryptosleep casket]] or a [[cryptosleep casket]] for any amount of time. The colonists in the "[[Scenario system#Crashlanded|Crashlanded]]" scenario have a chance of starting with cryptosleep sickness, as they were in cryptosleep before crashing on the planet.

{| class="wikitable"
|-
! Ailment !! Symptoms
|-
| '''Cryptosleep sickness''' || 
* Frequent vomiting (''MTB of 3 hours'')
* Impaired [[consciousness]] (×80%)
* Impaired [[moving]] (×90%)
* Impaired [[manipulation]] (×90%)
|}
Treatment:
* Wears off after {{ticks|10000}}

=== Food poisoning ===
Occurs after having eaten a contaminated meal or occasionally from raw food. The chance of contamination for cooked meals is determined by the [[Room stats#Cleanliness|cleanliness of the room]] where it was prepared and cook's [[food poison chance]] stat. 

Raw food has a flat chance of 2% of causing food poisoning. Cooked meals roll two two seperate probabilities to determine if the food is poisonined. The first is the chance to get food poisoning due to a "Filthy Kitchen" as determined by the [[cleanliness]] of the room containing the cooking station in use. See the accompanying graph for specifics. Note that cleanliness above -2 appears prevent this roll from producing poisoned meals. If the cooking station being used is not inside a room, it instead defaults to a 2% chance. 

If the first roll fails to poison the meal, then the a second roll is performed, this time based on the [[food poison chance]] of the pawn, which in turn is controlled entirely by their [[Skills#Cooking|cooking skill]].
{| class = "wikitable" width="180"
! Cooking Skill&nbsp;Level
! Chance from Skill&nbsp;Level
! Chance from Room Cleanliness
|- 
| style="background-color:#F00000" align="center" | 0 || style="background-color:#F00000" align="center" | 5.00% || rowspan="10"| {{GraphChart|width=400|height=100|type=line|x=-5, -3.5, -2, 0|y=5, 2.5, 0, 0|xAxisTitle=Room Cleanliness|yAxisTitle=Food Poisoning Chance (%)}}
|- style="background-color:#FF5500"
| align="center" | 1 || align="center" | 4.00%
|- style="background-color:#FBA933"
| align="center" | 2 || align="center" | 3.00%

|- style="background-color:#E3C933"
| align="center" | 3 || align="center" | 2.00%
|- style="background-color:#E3E933"
| align="center" | 4 || align="center" | 1.50%
|- style="background-color:#C3FF33"
| align="center" | 5 || align="center" | 1.00%

|- style="background-color:#B6FF00"
| align="center" | 6 || align="center" | 0.50%
|- style="background-color:#86FF00"
| align="center" | 7 || align="center" | 0.25%
|- style="background-color:#66FF00"
| align="center" | 8 || align="center" | 0.15%

|- style="background-color:#00FF00"
| align="center" | 9-20 || align="center" | 0.10%
|}
{| class="wikitable"
|-

|-

|}

Note that food poisoning starts at 100% severity and drops to zero (and goes away) over the course of 24 hours.
{| class="wikitable"
|-
! Stage !! Begins at !! Symptoms
|-
| '''Food poisoning (minor)''' || 0–4 hours from onset ||
* Vomiting (''MTB of 0.3 days'')
* Some pain (+20%)
* Impaired [[consciousness]] (×60%)
* Impaired [[moving]] (×80%)
* Impaired [[manipulation]] (×90%)
* Reduced [[blood filtration]] (×95%)
* Much slower [[Eating speed|eating]] (×50%)
|-
| '''Food poisoning (major)''' || 4–20 hours from onset ||
* Vomiting (''MTB of 0.2 days'')
* Significant pain (+40%)
* Impaired [[consciousness]] (×50%)
* Impaired [[moving]] (×50%)
* Impaired [[manipulation]] (×80%)
* Reduced [[blood filtration]] (×85%)
* Much slower [[Eating speed|eating]]  (×30%)
|-
| '''Food poisoning (recovering)''' || 20–24 hours from onset ||
* Vomiting (''MTB of 0.4 days'')
* Some pain (+20%)
* Impaired [[consciousness]] (×60%)
* Impaired [[moving]] (×80%)
* Impaired [[manipulation]] (×90%)
* Reduced [[blood filtration]] (×95%)
* Much slower [[Eating speed|eating]]  (×30%)
|}

=== Toxic buildup ===
Primarily occurs with exposure to [[Events#Toxic fallout|toxic fallout]]. A colonist under a roof is protected from exposure. Prolonged exposure gradually increases the buildup level. Once a colonist returns to a roofed area their buildup severity will gradually decrease. The buildup severity occurs in stages. The later stages cause permanent [[#Dementia|dementia]] which does not wear off even after toxic buildup subsides. When a pawn affected by toxic buildup dies, there is a chance that its corpse will instantly rot - this chance is equal to the severity.

Buildup is proportional to the [[toxic sensitivity]] [[stat]] - thus, [[human]]s buildup at the full rate, [[animal]]s at half, and [[insects]] and [[mechanoids]] are immune. 

Alternatively, some attacks also cause toxic buildup, such as [[cobra]] bites, the [[venom talon]] {{RoyaltyIcon}} or [[venom fangs]] {{RoyaltyIcon}}.

Once no longer exposed, severity reduces by 0.08 per day, meaning that it will take up to 12.5 days to eliminate all toxins accumulated in the body. However, colonists that reach high stages of toxic buildup are likely to develop further complications.
{| class="wikitable"
|-
! Stage !! Begins at !! Symptoms
|-
| '''Toxic buildup (initial)''' || ≥4% severity ||
* -5% [[Consciousness]]
|-
| '''Toxic buildup (minor)''' || ≥20% severity ||
* -10% [[Consciousness]]
|-
| '''Toxic buildup (moderate)''' || ≥40% severity ||
* -15% [[Consciousness]]
* Vomiting (''MTB of 5 days'')
* [[Dementia]] ('''permanent''', ''MTB of 146 days to develop'')
* [[Carcinoma]] (''MTB of 438 days to develop'')
|-
| '''Toxic buildup (serious)''' || ≥60% severity ||
* -25% [[Consciousness]]
* Vomiting (''MTB of 1 day'')
* [[Dementia]] ('''permanent''', ''MTB of 37 days to develop'')
* [[Carcinoma]] (''MTB of 111 days to develop'')
|-
| '''Toxic buildup (extreme)''' || ≥80% severity ||
* Unconsciousness (Max. [[consciousness]] 10%)
* Vomiting (''MTB of 0.5 day'')
* [[Dementia]] ('''permanent''', ''MTB of 13 days to develop'')
* [[Carcinoma]] (''MTB of 39 days to develop'')
|-
| '''Toxic buildup (extreme)''' || 100% severity ||
* Death
|}

=== Brain shock ===
{{quote|"After-effects of an electrical shock to the brain. This is generally cause by feedback from brain implants hit by EMP pulses."  - '''In-game description'''}}
Occurs when an [[EMP]] effect hits a pawn with the following brain implants:
* [[Learning assistant]] {{RoyaltyIcon}}
* [[Neurocalculator]] {{RoyaltyIcon}}
* [[Circadian assistant]] {{RoyaltyIcon}}
* [[Circadian half-cycler]] {{RoyaltyIcon}}
It lasts between {{ticks|2500}} and {{ticks|3500}}.

Despite only occuring with implants from the [[Royalty DLC]], it is defined in the core code.

{| class="wikitable"
|-
! Stage !! Symptoms
|-
| '''Brain shock''' ||
* Unconscious ([[Consciousness]] max. 10%)
|}

=== Psychic shock ===
{{quote|A state of psychic chaos in the brain and mind. Caused by psychic attacks or critical level of neural heat, this effect is debilitating until it wears off.|In-game description}}
Occurs when a pawn is hit by the effect of a [[psychic shock lance]] or when exceeding a pawn's [[Psycasts#Psycasts#Neural heat limit|neural heat limits]] when psycasting {{RoyaltyIcon}}.

It lasts {{ticks|7500}}.

{| class="wikitable"
|-
! Stage !! Symptoms
|-
| '''Psychic shock''' ||
* Unconscious ([[Consciousness]] max. 10%)
|}

=== Biosculpting sickness ===
{{Ideology|No category}}
{{quote|"The after-effects of an incomplete biosculpting cycle. It causes nausea, dizziness, and fuzzy thinking."|In-game description}}
Occurs when a pawn is ejected from a [[biosculpter pod]] after 24 hours without power. 

It lasts between {{ticks|8000}} and {{ticks|12000}}

{| class="wikitable"
|-
! Stage !! Symptoms
|-
| '''Biosculpting sickness''' ||
* [[Consciousness]] ×80%
* [[Moving]] ×90%
* [[Manipulation]] ×90%
* Vomitting (Mtb 0.125 days)
|}

== Surgical ==
These ailments happen with medical operations.

=== Anesthetic ===
Used in surgery to make sure that a pawn is unconscious. It can also be administered outside of operations using a medical bill, consuming medicine.

{| class="wikitable"
|-
! Stage !! Begins at !! Symptoms
|-
| '''Anesthetic (sedated)''' || 0–6 hours from onset ||
* Unconscious ([[Consciousness]] max. 1%)
|-
| '''Anesthetic (woozy)''' || 6–12 hours from onset ||
* Reduced [[pain]] (×80%)
* Impaired [[consciousness]] (70% max)
* Impaired [[moving]] (-20%)
* Impaired [[manipulation]] (-20%)
* Impaired [[metabolism]] (-20%
* Impaired [[sight]] (-15%)
* Vomiting (''MTB of 0.25 days'')
* Confused wandering (''MTB of 5 days'')
* Forget memory thought (''MTB of 5 days'')
* Improved [[mood]] (+10)
|-
| '''Anesthetic (wearing off)''' || 12+ hours from onset ||
* Reduced [[pain]] (×95%)
* Impaired [[consciousness]] (90% max)
* Impaired [[moving]] (-5%)
* Impaired [[manipulation]] (-10%)
* Vomiting (''MTB of 4 days'')
* Confused wandering (''MTB of 50 days'')
|}

Treatment:
* Wears off on its own between {{ticks|45000}} to {{ticks|75000}} even if severity has not reached 0%
** Surgery is unaffected even if it wears off before finished

==== Version history ====
Prior to 1.1 it lasted only {{ticks|15000}} and did not have any other stages afterwards.

== Resurrection ==
These may occur after a dose of [[resurrector mech serum]] is applied on a dead pawn.

=== Resurrection sickness ===
After-effects of being resurrected by mechanite injection. Artificially-kickstarted body processes take time to rebalance themselves.

{| class="wikitable"
|-
! Ailment !! Symptoms
|-
| '''Resurrection sickness''' || 
* Loss of [[moving]] (max. 10%)
* Loss of [[manipulation]] (max. 10%)
|}

Treatment:
* Wears off anywhere from {{ticks|90000}} to {{ticks|150000}}

Probability:
* 100% chance of being applied

=== Blindness ===
Mechanites fail to properly repair the eyes, instead causing more damage to it, resulting in blindness.

Blindness from [[resurrector mech serum]] applies to both eyes, resulting in total blindness

{| class="wikitable"
|-
! Ailment !! Symptoms
|-
| '''Blindness''' || 
* Complete loss of function (-100% part efficiency)
|}

Treatment:
* Replace eyes with [[bionic eye]]s or [[archotech eye]]s

Probability:
* 2% chance when used at 0.1 days or less of decay
* Linearly increases to 80% after 5 days decayed

=== Resurrection psychosis ===
Chaotic thought patterns caused by the decoherence of resurrection mechanites. Resurrection psychosis progresses and eventually causes total psychosis and death.

The severity of the psychosis increases by 0.01 per day, meaning that it will kill in 100 days. Hopefully this gives you enough time to find a [[healer mech serum]], the only treatment for the disease.

{| class="wikitable"
|-
! Stage !! Begins at !! Symptoms
|-
| '''Resurrection psychosis (hidden)''' || ≥0% severity ||
* No visible symptoms, doesn't show up in health tab
* Can still be cured with [[healer mech serum]] at this stage even if it is not visible.
|-
| '''Resurrection psychosis (early)''' || ≥10% severity ||
* Frequent mental breaks (''MTB of 9 days'')
|-
| '''Resurrection psychosis (moderate)''' || ≥25% severity ||
* [[Consciousness]] -10%
* Frequent mental breaks (''MTB of 6 days'')
|-
| '''Resurrection psychosis (advanced)''' || ≥40% severity ||
* [[Consciousness]] -20%
* Frequent mental breaks (''MTB of 3 days'')
|-
| '''Resurrection psychosis (severe)''' || ≥55% severity ||
* [[Consciousness]] -30%
* Extremely frequent mental breaks (''MTB of 0.5 days'')
|-
| '''Resurrection psychosis (total)''' || ≥70% severity ||
* [[Consciousness]] -40%
* Extremely frequent mental breaks (''MTB of 0.25 days'')
|-
| '''Resurrection psychosis (catatonic)''' || ≥85% severity ||
* Pawn becomes unconscious ([[Consciousness]] max. 10%)
|-
| '''Resurrection psychosis (catatonic)''' || 100% severity ||
* Death
|}

Treatments:
* Healer mech serum
* Allowing the pawn to die again, then resurrecting once more (rerolls the disease)

Probability of contracting:
* 2% chance when used at 0.1 days or less of decay
* Linearly increases to 80% after 5 days decayed

Prevention:
* Freeze corpses immediately after death.  Corpses placed in a [[sarcophagus]] are still affected by the temperature of the room they are in, and can be removed later.

== Heart attack ==
Heart attacks can randomly occur on any pawn/animal at any time, but they become more frequent as they pass half of their life expectancy (e.g. 40 years in humans), triggered by the [[Events#Birthday|birthday event]]. There must be more than 2 colonists on your colony for this to occur.

The average interval between heart attacks is curved as follows (in days):
* 0-50% of life expectancy: 99,999,999 - 99,999,999
* 50-60% of life expectancy: 99,999,999 - 2,500
* 60-100% of life expectancy: 2,500 - 300

Examples of intervals and chances:
* 55% of life expectancy (i.e. 44 in humans): 50,001,249.5 days (approx. 0.00000002% per day)
* 80% of life expectancy (i.e. 64 in humans): 1,400 days (approx. 0.000714% per day)

=== Stages ===
{| class="wikitable"
|-
! Stage !! Begins at !! Symptoms
|-
|'''Painful''' || 0% Severity || 
* [[Consciousness]] ×50%
* [[Pain]] +40%
|-
|'''Debilitating''' || 60% Severity || 
* [[Consciousness]] max. 10% (Unconciousness)
* [[Pain]] +60%
|-
|'''Fatal''' || 100% Severity || 
* Death
|}

==== Progression ====
Heart attacks always start at 40% severity. Every {{ticks|5000}} the heart attack severity will randomly change by a value between -40% to +60%. This means that it is possible for a heart attack to treat itself on its own, but usually the heart attack progresses to fatal severity.

==== Treatment ====
Like injuries, medicine can be used to treat a heart attack. 

Doctors treating heart attacks will administer treatments rapidly, consuming medicine in the process. Each treatment has a chance to succeed, reducing the heart attack severity by 30%. Successfully reducing severity below 0 will completely treat the heart attack. 

The maximum chance a particular treatment can succeed is 65%.

== Version history ==
* [[Version/0.7.581|0.7.581]] Added with cataracts and bad back
* [[Version/0.8.657|0.8.657]] - Added hypothermia, frostbite, heatstroke, and burns from being in areas with extreme temperatures.
* [[Version/0.9.722|0.9.722]] - Food poisoning and cryptosleep sickness added. Some ailments can now cause vomiting.
* [[Version/0.10.785|0.10.785]] - Starvation and blood loss are now staged and affect consciousness as they worsen.
* [[Version/0.12.906|0.12.906]] - All organisms including animals have life expectancies and will develop chronic conditions like frailty or cataracts in old age. Heart attacks added.
* [[Version/0.13.1135|0.13.1135]] - Carcinoma, asthma, and hearing loss added.

[[Category:Health]]