If You Often Get Leg Cramps at Night, Your Body May Be Trying to Tell You Something
Nighttime leg cramps are sudden, involuntary and often painful muscle contractions, usually affecting the calf, foot, or thigh. They’re common, particularly with increasing age, and often aren’t caused by a serious illness.
However, frequent or newly developing cramps deserve attention, because several factors can contribute.
7 possible causes
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Muscle overuse or fatigue
Long periods of walking, standing, exercise, or an unusually strenuous day can trigger cramps later that night. -
Dehydration
Losing substantial amounts of fluid through sweating, vomiting, or diarrhea can contribute to muscle cramping. -
Certain medications
Some medicines—including certain diuretics and cholesterol-lowering medications—can be associated with muscle cramps or other muscle symptoms. -
Electrolyte disturbances
Abnormal levels of potassium, calcium, or magnesium can cause muscle symptoms. However, ordinary nighttime cramps do not automatically mean you have a magnesium deficiency. -
Nerve problems
Peripheral neuropathy and nerve compression can produce cramping, tingling, burning, or numbness in the legs. -
Circulation problems
Problems affecting blood flow can cause leg pain or discomfort, although typical nighttime cramps aren’t necessarily caused by poor circulation. -
Pregnancy and aging
Both are associated with a higher frequency of leg cramps.
What to do when a cramp happens
Try gently stretching and massaging the affected muscle. For a calf cramp, straighten your leg and gently pull your toes toward your shin. Standing and putting weight on the affected leg may also help some people.
Regular stretching, adequate fluid intake, and avoiding sudden increases in strenuous activity may reduce episodes.
Don’t automatically take supplements
Taking large doses of magnesium, potassium, or other supplements isn’t a universal solution for leg cramps. Supplements can cause problems when taken unnecessarily, and potassium in particular can be dangerous for people with certain kidney or heart conditions or those taking particular medications
