What causes leg cramps in the calves during sleep?

Leg cramps during sleep may be caused by various factors: 1. Excessive fatigue: After intense physical activity or exercise during the day, leg muscles can become fatigued with lactic acid buildup, leading to nocturnal leg cramps. 2. Calcium deficiency: Calcium ions are essential for maintaining normal muscle function. A lack of calcium increases neuromuscular excitability, triggering muscle cramps. 3. Cold exposure: Inadequate bedding or low ambient temperature during sleep may cause leg muscles to get cold, resulting in spasms. 4. Poor blood circulation: Vascular conditions such as lower limb varicose veins or venous thrombosis may impair venous return, causing leg cramps. If this symptom occurs frequently, it is advisable to seek medical evaluation promptly for appropriate diagnosis and targeted treatment.