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A 32-year-old female asked:

I just started period and when i lay down i have painful muscle spasm in one side of lower back is this normal with no stomach cramps?

1 doctor answer1 doctor weighed in
Dr. Julie Abbott
Preventive Medicine 47 years experience
Positional muscle: spasm is not that uncommon during menses. First there is uterine contraction which, if strong, can press on nearly blood vessels reducing the supply of oxygen to nearby muscles. When you lie down, shifts in blood vessel position in your pelvis may aggravate this phenomenon. As long as the spasm is temporary, I wouldn't be too concerned. Naproxen/ibuprofen should help. Stay well:)
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Last updated Sep 14, 2015


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