Many: Trauma, infection, non-infectious inflammation, e.g., rheumatoid arthritis, part of general autoimmune disease, gout, lyme disease, rarely a tumor.
Answered 10/3/2016
6.1k views
Several: We don't have enough space to go into all the possibilities but if this is a current condition it should be evaluated by your physicain. This is not normal and in most cases will have a diagnosis which can be treated.
Answered 5/19/2017
5.9k views
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