How can you prevent muscle cramps?

A muscle cramp is a sudden, involuntary tightening that can be painful and may last from moments to several minutes. It can follow unfamiliar or strenuous activity, prolonged sitting, heat, fluid loss or muscle fatigue. Recurrent cramps may also occur alongside dehydration, muscle strain, circulation problems, thyroid disease, kidney disease or reduced muscle mass. The pattern and associated symptoms help guide assessment.

Drink fluids regularly and replace losses after sweating, unless a clinician has prescribed fluid restrictions. Warm up before exercise, increase training gradually and stretch calves, thighs or other muscles that tend to tighten. Gentle movement and massage may ease a developing cramp; stop activity if pain or weakness persists. Avoid changing supplements or stopping prescribed medicine on your own. A review can check medicines, nerve or circulation symptoms and possible deficiencies.

Arrange a clinical review if cramps are frequent, severe, worsening, disturb sleep or occur with weakness, numbness, swelling or changes in skin colour. Seek urgent care for a sudden painful swollen limb, new severe weakness, dark urine after intense exertion or cramps with confusion or collapse. Information about Muscle Cramps can help you describe the pattern, but persistent episodes may need examination and blood tests.

Ask whether your fluid intake is appropriate, whether a medicine may contribute, which tests are useful, and whether symptoms suggest dehydration, muscle strain or a circulation or thyroid problem.