A member asked:

My thumb will lock up next to my index finger a lot. and just now my index finger was locked spread away from my middle finger quite far. what's wrong?

A doctor has provided 1 answer

Muscle spasm: The symptoms you describe are from spasm (prolonged muscle contraction) of the small muscles of the thumb/index finger. This can be caused by a variety of conditions, but most commonly fatigue of the muscles from overuse, dehydration, and/or new activities that tax these muscles more than usual. At your age, it is unlikely a serious concern. If symptoms persist, recommend a virtual consult

Answered 1/6/2019

1.7k views

Thank

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