Over 100: Some conditions are joint pain only (osteoarthritis), others have joint pain as part of a systemic process (lupus). Some are curable (certain types of infectious arthritis), some are just treatable (rheumatoid arthritis).
Answered 1/31/2015
3.3k views
Multiple: Osteoarthritis is most common type, then there are numerous inflammatory types such as rheumatoid arthritis, lupus, there are arthritic conditions associated with various illnesses such as those associated with psoriasis, inflammatory bowel disease, then there are types of arthritis called reactive arthritis that often often proceed or follow viral illness just to name a few.
Answered 6/11/2017
662 views
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