A member asked:

I have back muscle spasms mostly at night on the left side of my upper back. why?

A doctor has provided 1 answer
Dr. Michael Dugan answered

Specializes in Hematology

If this is mostly: On one side it is probably related to the position you are sleeping in or activity during the day that is leading to issues when your body starts to relax as part of the sleep process.

Answered 8/9/2019

5.4k views

Thank

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