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A 30-year-old female asked:

My left calf bit tight & muscle twitches, not red or warm. twitches & twinges cause discomfort at times. i was told i had knot. what causes twitches?

1 doctor answer1 doctor weighed in
Dr. Bert Liang
Specializes in Neurology
Many many things: Twitches are also known as fasciculations, which are muscle fibers contracting often as part of a single motor unit. There are many things that cause these fasciculations, including exercise, normal movement, to metabolic, autoimmune, infiltrative, infectious, toxic/metabolic, degenerative etc etc types of situations.

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Last updated Aug 1, 2018

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