Female, age 44 health good weight 165 or 170 lbs height 5 ft 3. Sudden waking at night usually around 2 a.m. with tingling or fluttery feeling in legs, arms, sometimes also rest of body. Sometimes sensation of anxiety or increased mortality, bowels often need to empty suddenly, as if there were an unprovoked adrenaline rush. Can this be a cardiac problem? Or just perimenopause symptoms? Other suspicions? Started taking melatonin 3 g before bed, seems to reduce waking time after event but does not eliminate the events. Have some carpal tunnel symptoms so wear wrist braces at night, at first I thought it was related to that (because of the tingling), but it seems more general and is quite disruptive. Tips?