Night cramps (also called nocturnal leg cramps) can happen to anyone, but they’re more common in certain groups.
People at higher risk include:
- Older adults: The frequency of night cramps tends to increase with age.
- Pregnant people: Leg cramps are common, especially during the second and third trimesters.
- People who are dehydrated or who lose fluids through heavy sweating.
- People with mineral imbalances: Low levels of magnesium, potassium, or calcium can contribute in some cases, although they’re not the cause of most night cramps.
- People who stand or sit for long periods or perform strenuous exercise without adequate recovery.
- People with certain medical conditions, including:
- Peripheral artery disease
- Type 2 Diabetes
- Chronic kidney disease
- Some nerve disorders, such as Peripheral neuropathy
- People taking certain medications, such as some diuretics (“water pills”), certain cholesterol-lowering drugs, or other medications that can contribute to cramps in some individuals.
To help reduce night cramps:
- Stay hydrated.
- Stretch your calf and hamstring muscles before bed.
- Stay physically active, but avoid suddenly increasing exercise intensity.
- Review your medications with a healthcare professional if cramps began after starting a new one.
You should seek medical evaluation if cramps are:
- Frequent or severe.
- Associated with muscle weakness, numbness, or swelling.
- Occurring in only one leg with redness or warmth.
- Persisting despite self-care measures.
Many night cramps are harmless and don’t have a single identifiable cause, but persistent or worsening symptoms are worth discussing with a healthcare professional.
