There are several<unk> s 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<unk> s, which include: * Osteoarthritis * Rheumatoid arthritis * Gout and pseudo-gout * Septic arthritis * Ankylosing spondylitis * Juvenile idiopathic arthritis * Still's<unk>  *Psoriatic arthritis Joint pain can also be a symptom of other<unk> s. In this case, the arthritis is considered to be secondary to the main<unk> ; these include: * Psoriasis * Reactive arthritis * Ehlers–Danlos syndrome * Iron overload * Hepatitis *<unk><unk>  * Sjögren's<unk>  * Hashimoto's thyroiditis * Celiac<unk>  * Non-celiac gluten sensitivity * Inflammatory bowel<unk>  (including Crohn's<unk>  and ulcerative colitis) * Henoch–Schönlein purpura * Hyperimmunoglobulinemia D with recurrent fever * Sarcoidosis * Whipple's<unk>  * TNF receptor associated periodic syndrome * Granulomatosis with polyangiitis (and many other vasculitis syndromes) * Familial Mediterranean fever * Systemic lupus erythematosus An undifferentiated arthritis is an arthritis that does not fit into well-known clinical<unk>  categories, possibly being an early stage of a definite rheumatic<unk> .
complications of Lyme disease
complications of West Nile fever
complications of Rheumatic fever
complications of Diphtheria
complications of Behçet's disease
complications of Chagas disease
complications of Sjögren syndrome
complications of Cat-scratch disease