This page summarises publicly available NHS information for educational purposes only. It is not medical advice or a diagnosis. Always consult a qualified healthcare professional.
What is leg cramps?
Leg cramps are sudden, painful muscle contractions, most commonly in the calf. They often happen at night and can last from a few seconds to several minutes. They are very common and usually not a sign of anything serious.
When NHS resources suggest seeing a GP
- Cramps last longer than 10 minutes
- Cramps happen frequently and disrupt sleep
- Cramps started after exposure to a toxic substance
- You have muscle weakness or wasting
Self-care information from NHS
- Stretch and massage the muscle during a cramp
- Stand on the affected leg and push the heel down
- Stay hydrated throughout the day
- Stretch your calves before bed
Common questions
Why do I get leg cramps at night?
Night cramps are common and can be caused by inactivity during the day, dehydration, low electrolytes, or certain medications. Gentle calf stretches before bed may help prevent them.
What deficiency causes leg cramps?
Low levels of magnesium, potassium, calcium, or sodium can contribute to cramps. However, most cramps are not caused by deficiency. A GP can check if you are concerned.
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This page is for informational and educational purposes only. It does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional about your individual situation. NorMed organises publicly available NHS information and is not affiliated with the NHS.