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Muscle Cramps
Sudden, involuntary muscle contractions that can be painful.
Red Flags
If you experience these, seek immediate medical attention.
- •Cramps accompanied by severe swelling or redness
- •Weakness or numbness after the cramp resolves
- •Cramps occurring after exposure to toxins or medications
- •Persistent cramping not relieved by stretching
Overview
Muscle cramps are sudden, painful tightenings of a muscle. They often occur in the calves, thighs, or feet, especially at night or during exercise. Most are harmless but can signal electrolyte imbalances.
Possible Causes
Dehydration
Lack of fluids leading to electrolyte imbalance.
Electrolyte Imbalance
Low potassium, magnesium, or calcium.
Peripheral Artery Disease
Reduced blood flow to legs causes cramping during activity.
Medication Side Effect
Statins and diuretics commonly cause cramps.
Home Care
- Stretch the affected muscle gently.
- Apply heat to relax the muscle.
- Hydrate and consider electrolyte drinks.
- Massage the cramped area.
Research cited
Sources for this page are being compiled. Each research summary on Body Signals is backed by peer-reviewed literature — source links will be added as part of our ongoing editorial review.
Sidebar
When to see a doctor
- •Cramps severely disrupt sleep regularly.
- •Muscle weakness persists after cramps.
- •Started after new medication.
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Medical Disclaimer
This is a research summary, not medical advice. Body Signals is an independent research digest — it summarises published research for informational purposes and is not a healthcare provider. Consult a qualified healthcare provider before making changes to diet, exercise, supplements, or medication — especially if you have existing conditions or take prescription drugs.