Leg cramps at night – nocturnal leg cramps – are pains that occur during the sleeping hours. They can cause a person to wake up and occur at night due to prolonged hours of inactivity. Nocturnal leg cramps commonly occur in the calf but can also cause pain in the thighs and feet. Pain due to leg cramps at night can last for mere seconds or for several minutes. After the leg cramp passes, muscle soreness may linger for the rest of the night or even until the following day. Both men and women can experience leg cramps and they occur more commonly in adults over the age of 50.

Leg cramps at night, different from restless leg syndrome

Both nocturnal leg cramps and restless leg syndrome (RLS) occur during sleeping hours but that is the only similarity between the two conditions. There are many differences between leg cramps at night and restless leg syndrome, including:
  • RLS does not cause pain or cramping, while nocturnal leg cramps do.
  • RLS is more of a discomfort or crawling feeling in your legs.
  • RLS causes the desire to move the legs, while nocturnal leg cramps often prevent movement.
  • Moving the leg in RLS offers relief – moving the leg in nocturnal leg cramps does not, instead stretching is required.

Causes and risk factors of leg cramps at night

The exact cause of nocturnal leg cramps is often unknown, but potential causes and risk factors of nightly leg cramps include:
  • Sitting for prolonged periods of time
  • Over-exertion of the muscles in the leg
  • Standing or working on concrete floors
  • Sitting improperly
Medical conditions, too, can contribute to nocturnal leg cramps, such as:
  • Pregnancy
  • Alcoholism
  • Dehydration
  • Parkinson’s disease
  • Neuromuscular disorders
  • Structural disorders like flat feet
  • Endocrine disorders like diabetes
  • Diuretics, statins, beta agonists

Treatment and prevention for nocturnal leg cramps

Treatment for nocturnal leg cramps depend on the cause. For example, if the cause of your nocturnal leg cramps is due to dehydration, ensure you stay well hydrated throughout the day. Other treatment and preventative methods for nocturnal leg cramps include:

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