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And then it went away when I started it again. It was better then a drug â¦ and no side affects! (Later, I found out that the sourse cause of the heartburn was a simple vitamine C tablet that I had also been taking.) Just one more thing. John Lee, M.D. also said that magnesium deficiency can cause leg cramps.
Cramps or spasms in the muscles often have no clear cause. Possible causes of hand or foot spasms include: 1  Brain disorders, such as parkinson's disease, multiple sclerosis, dystonia, and Huntington's disease.2  Chronic kidney disease and dialysis.3  Damage to a single nerve or nerve group (mononeuropathy) or multiple nerves (polyneuropathy) that are connected to muscles.ossible causes of hand or foot spasms include: 1  Brain disorders, such as parkinson's disease, multiple sclerosis, dystonia, and Huntington's disease.