According to Mayo Clinic, familial Mediterranean fever is an inflammatory disorder that causes reoccurring fevers and inflamed abdomen, lungs and joints. This inherited disorder typically occurs in people of Mediterranean origin, but any ethnic group can be affected by familial Mediterranean fever.
According to Mayo Clinic, familial Mediterranean fever is often diagnosed early in childhood. Symptoms of onset include fever, abdominal pain, chest pain, swollen joints, constipation, diarrhea, muscle aches and a red rash on the legs. These symptoms occur in short periods of time ranging from one to three days, referred to as attacks. The disorder is a result of a gene mutation passed from parents to their children. There is no cure for familial Mediterranean fever.