Familial Mediterranean fever (FMF)
The most characteristic signs are:
- Fever attacks of short duration, a few hours to 3 or 4 days maximum,
- severe stomach pain,
- chest pain,
- pain in the legs (often also present on exertion) and Joints (especially ankles and knees) that can sometimes be swollen.
- A large red plaque (called pseudo erysipelas) is sometimes seen around the ankle or knee.
The patients are almost always of Mediterranean origin: North Africa (Arabs of the Levant, Sephardic), Turkey, Armenia.