
What causes frequent leg cramps?
I've been experiencing frequent leg cramps lately, which are quite painful. Sometimes the cramps occur suddenly while I'm sleeping at night, waking me up in pain. I also tend to get cramps when walking too much during the day or standing for prolonged periods. What could be causing this?

Leg cramps, medically known as muscle spasms, are sudden, involuntary muscle contractions that usually cause pain and discomfort. There are various causes of leg cramps, with common ones including:
1. Dehydration and electrolyte imbalance: Excessive sweating during prolonged exercise or working in hot environments may lead to loss of body fluids and electrolytes, thereby triggering cramps.
2. Muscle fatigue: Overuse of muscles, especially without adequate rest, can also lead to cramping.
3. Lack of physical activity: Prolonged sitting and insufficient muscle exercise can impair blood circulation and increase the likelihood of cramps.
4. Exposure to cold: Cold stimulation can cause muscle contraction and increase the risk of cramps.
5. Medication side effects: Certain medications, such as diuretics and antihypertensive drugs, may affect electrolyte balance and increase the risk of cramps.
In daily life, maintaining a balanced diet, engaging in moderate exercise, avoiding prolonged periods in the same posture, and keeping warm can all help prevent leg cramps.