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A 41-year-old male asked:

For the last month, any time i use my right hand thumb to do anything, like twisting open a bottle or opening a bag, it starts twitching and spasms for a few seconds. there's no pain, but when it does this i can't control it. what might be the cause?

1 doctor answer1 doctor weighed in
Dr. William Wilson
Family Medicine 47 years experience
This type of temporary thumb spasm can be due to stress or fatigue. When it quickly resolves, it is unlikely due to a serious problem. If the spasms worsen, seek an evaluation by your physician. You likely will need laboratory tests to rule out a metabolic problem and a neurological examination. Magnesium deficiency can cause muscle cramps and it's a very safe and inexpensive to try.

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Last updated Mar 20, 2021

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