What are cramps in back of your legs caused by usually while sleeping wake up painful When cramping what do you do?

RLS. RLS= Restless Legs Syndrome. You nee a sleep study PSG. This is a nocturnal sleep disorder that is classified under the seizure disorders. It is treated with neuroleptics. While you are waiting to be evaluated exams and have blood tested done., you can start magnesium 500mg at bedtime an iron 325mg.