Nocturnal Leg Cramps

(Muscle Cramps; Nocturnal Muscles Cramps; Age-Related Cramps)

Definition

Nocturnal leg cramps are sudden contractions of the lower leg and foot muscles. They often awaken you from sleep. The calf muscles are most often involved.
The Calf Muscles
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Causes

The specific cause of nocturnal leg cramps is unknown. These cramps may be related to imbalances in local muscle chemistry. This can be related to problems with nerves, muscles, or blood supply.

Risk Factors

Nocturnal leg cramps are more common in people aged 50 years and older. Other factors that may increase your chance of nocturnal leg cramps include:

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