Scarlet Fever

From D&D Wiki

Name: Scarlet Fever (Ex)
Infection DC: 16 (Contact, Inhalation)
Incubation: 1 week
Damage: Nauseated or exhausted, possible rheumatic fever

Scarlet fever is common among children and the weaker adults. It causes a red, flushed appearance of the body, and a strawberry-colored patch on the tongue; fever, sore throat and vomiting may occur.

If the PC fails their check by more than 10 points, they are considered to be exhausted and in danger of contracting rheumatic fever (if left untreated for 1 week, can lead to heart failure). Alternatively, you may use pneumonia instead of rheumatic fever.