possibly sciatica: There are a number of possibilities, but among the most common cause is "sciatica". This is a condition in which a nerve becomes irritated in the back and can cause pain that runs down the leg. For reasons that we dont fully understand, sciatica can be worse during periods, this is possibly multi-factorial from the fluid retention, inflammation, and hormonal changes that can occur, may resolve.
Answered 4/10/2018
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