Lung rot

Lung rot is a long-lasting disease that can be fatal if left untreated.

Overview[edit]

Lung rot appears after prolonged exposure to rot stink, and affects both lungs. It can't be acquired from an event.

The higher the "rot stink" hediff severity, the more likely the disease is. At 0.5 severity, there is an MTB of 8 days at 0.5 severity to get this disease. This goes up to a MTB of 0.5 days at 1.0 severity.^[Mechanics?]

Lung rot is not fatal if well-treated (some combination of good doctor, medicine, or facilities.) Each lung must be treated separately. As long as every treatment is 30% or higher, the disease will not progress. After 3-4 treatments over 6-8 days the disease will disappear.

Prevention[edit]

Prevent colonists from inhaling rot stink gas, which is done by avoiding rotten corpses; a rot stink severity of at least 0.5 is required to contact lung rot. Try to avoid being in melee with scaria-infested animals, as they will have a habit of immediately rotting on death. Otherwise, haul, bury, burn, or cremate corpses in a timely manner, or quarantine them until they finish rotting.

In the Biotech DLC, face masks, gas masks, and other sources of Toxic Environment Resistance all reduce the severity gain of rot stink exposure.

Detoxifier lungs and fleshmass lungs are immune to lung rot infections. Each replaced lung also increases Toxic Environment Resistance, increasing a colonist's resistance to lung rot even with only one replaced lung.

The perfect immunity gene will prevent the acquisition of this disease but will not cure pre-existing conditions.

Stages[edit]

These are the following stages in which lung rot will progress through, and the effects it has on the victim. Note that the effects are generally doubled as lung rot usually occurs in both lungs at the same time.

Stage	Begins at	Symptoms
Lung rot (minor)	0 - 0.59 severity	+5% Pain −5% Breathing
Lung rot (major)	0.6 - 0.84 severity	+5% Pain −10% Breathing
Lung rot (Extreme)	0.85 - 0.99 severity	+10% Pain −15% Breathing −10% Consciousness
Lung rot (Extreme)	1.00 severity	Death

Progression[edit]

Severity increases by 0.300 per day.
Treatment slows progression by a maximum of 1.000 per day.
- This means the disease will regress by 0.700 per day at 100% tend quality.
- Progression will pause at 30% tend quality or higher.
- Note that good treatment will not cause the disease to go away on its own.

The disease resolves after 4-8 days, independent of the patient's immune functioning.

Treatment[edit]

Treatment can be done using medicine which suppresses the disease, preventing it from reaching fatal stages. Pawns do not need to rest, as no immunity is gained.

As long as it is tended by a decent doctor, lung rot isn't particularly threatening to a pawn's life. The real downside is the time and medicine consumed for treatment, especially if many pawns get lung rot at the same time. It is possible to reach >30% tend quality even without medicine, if you have a great doctor and hospital setup.

Version history[edit]

1.4.3523 - Added.
1.5.4062 - Rotstink exposure now causes lung rot in Core. Previously the effects were defined in Core, and the Steam announcement for Update 1.4 mentioned it as a Core feature, however rot stink exposure and lung rot would not be applied without the Biotech DLC.

Disease