People most at risk
👵 Older adults
Risk increases with age. Muscle changes, reduced activity, and certain medications may contribute.
🤰 Pregnant women
Night cramps are common during pregnancy, especially in the second and third trimesters.
💧 People who are dehydrated
Not getting enough fluids—particularly in hot weather or after heavy sweating—can increase the likelihood of cramps.
🏃 People who overuse or fatigue their muscles
Intense exercise, long periods of standing, or unusual physical activity can trigger cramps later at night.
🩺 People with certain medical conditions
Night cramps may be more common in people with:
- Type 2 diabetes
- Peripheral artery disease
- Peripheral neuropathy
- Kidney disease
- Thyroid disorders
💊 People taking certain medications
Some medicines have been associated with increased cramping, including:
- Diuretics (“water pills”)
- Some cholesterol-lowering medications
- Certain asthma medications
Don’t stop prescribed medications without consulting your healthcare provider.
What causes night cramps?
In many cases, the exact cause isn’t clear. Common contributors include:
- Muscle fatigue
- Dehydration
- Prolonged sitting
- Prolonged standing
- Sleeping with the foot pointed downward
When to seek medical advice
Consider seeing a healthcare professional if:
- Cramps are frequent or severe
- They regularly disrupt sleep
- You have weakness, numbness, or swelling
- Symptoms are worsening over time
