Our expert says:
Periodic limb movement disorder (PLMD) is repetitive cramping or jerking of the legs during sleep. It is the only movement disorder that occurs only during sleep. It can be caused by some diseases like diabetes, anemia, iron deficiency and some kidney disorders. Certain medications can also cause this (eg. Tryptanol, Valium withdrawal ) If it is really bad your doctor can prescribe central acting muscle relaxants like valium or anti epileptics or anti-parkinson's type medications. All of these have side effects and valium is addictive, so the decision should be taken only if all other possible treatable causes have been excluded.
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