Leg cramps are muscle spasms in the legs, most commonly in the calf gastrocnemius, a spontaneous tonic contraction of the muscle, in addition to the calf gastrocnemius can also involve the toes, the pain is obvious during the attack, lasting between a few seconds to a few minutes, often at night, can wake people up in pain, after kneading, pressing the spastic muscle, the symptoms can slowly ease, its cause is mostly calcium deficiency, in addition, like The cause is mostly calcium deficiency, but also localized cold and neurovascular compression. If the patient has this condition every day, it is recommended to go to the endocrinology department to improve the blood calcium and bone density scan and other tests to clarify whether calcium deficiency, after the diagnosis is clear, you can take oral calcium vitamin D chewable tablets every day, two tablets once, in the morning. Usually pay attention to more sunshine, when sleeping and sitting for a long time, to avoid pressure on the blood vessels and nerves in the legs, usually appropriate exercise to promote muscle activity and blood circulation.