Probably nothing: Small joint effusions can be caused by many, many things, most require no testing or intervention. If the joint hurts, non-steroidal anti-inflammatory medications such as advil (ibuprofen) can be helpful as can ice massage. Mostly rest and time. Imaging is not usually required for a non-traumatic, small effusion.
Answered 8/22/2018
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A doctor has provided 1 answer
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