Still's disease is an inflammatory disorder that affects the whole body and is part of the family of diseases known as rheumatic diseases. It is also known as systemic juvenile idiopathic arthritis (SJIA).
Still's disease typically affects children, adolescents, and young adults, usually between the ages of 5 and 35 years old. It is rare in people over the age of 40. It is most common in children between the ages of 2 and 5, and is rare in infants. In rare cases, Still's disease may affect adults, but the condition is usually milder in adults than in children.
Still's disease can begin with sudden, high fever episodes that last up to three days and can be accompanied by a skin rash. Other symptoms may include joint pain and swelling, muscle pain, fatigue, and a feeling of general discomfort. If left untreated, the disease can cause damage to the joints, organs, and other parts of the body.
It is important to note that Still's disease is not contagious, and it is not usually inherited. Treatment usually includes medication, physical therapy, and lifestyle changes. With early diagnosis and effective treatment, most people with Still's disease can expect to lead a normal life.