The elderly sleep twitching is caused by the following reasons: 1, the elderly sleep twitching in many cases is due to calcium deficiency or hypomagnesemia and other reasons, this situation can go to the hospital for electrolyte tests, you can make a preliminary diagnosis, once identified should be calcium supplementation and other treatment. 2, the elderly sleep twitching may also be due to fatigue, excitement, stimulation or cold weather and other reasons. When the elderly sleep, if they are too fatigued before going to bed, there is a certain degree of muscle excitement when relaxing, there will often be twitching. And the blood vessels of the lower limbs will spasm when it is cold, which will lead to impaired blood supply to the nerves, which will cause abnormal reflexes of the nerves and the phenomenon of twitching. 3, if the elderly drink coffee or eat some stimulating food, it will also lead to nerve stimulation and will appear the phenomenon of twitching in sleep. 4, the elderly sleep twitching may also be caused by Parkinson’s disease or epilepsy and other diseases, and should go to the hospital in time to identify the cause. Symptomatic treatment.