Classification
There are several diseases where joint pain is primary, and is considered the main feature. Generally when a person has "arthritis" it means that they have one of these diseases, which include:
- Osteoarthritis
- Rheumatoid arthritis
- Gout and pseudo-gout
- Septic arthritis
- Ankylosing spondylitis
- Juvenile idiopathic arthritis
- Still's disease
Joint pain can also be a symptom of other diseases. In this case, the arthritis is considered to be secondary to the main disease; these include:
- Psoriasis (Psoriatic arthritis)
- Reactive arthritis
- Ehlers-Danlos Syndrome
- Haemochromatosis
- Hepatitis
- Lyme disease
- Inflammatory bowel disease (Including Crohn's Disease and Ulcerative Colitis)
- Henoch-Schönlein purpura
- Hyperimmunoglobulinemia D with recurrent fever
- Sarcoidosis
- TNF receptor associated periodic syndrome
- Wegener's granulomatosis (and many other vasculitis syndromes)
- Familial Mediterranean fever
An undifferentiated arthritis is an arthritis that does not fit into well-known clinical disease categories, possibly being an early stage of a definite rheumatic disease.
Read more about this topic: Arthritis