Calcium deficiency convulsions are mainly characterized by muscle spasms in the limbs, waking up at night, and in severe cases, generalized convulsions. 1. Muscle spasms: when there is a calcium deficiency, there will be muscle spasms and cramps in a certain part of the body, and the more serious the calcium deficiency is, the faster and more frequent the convulsions may be. 2. Nocturnal awakening: the patient wakes up suddenly during sleep due to spasm and pain in the limbs, sometimes accompanied by involuntary tremor of the limbs and other symptoms. 3. Generalized convulsions: some patients with more serious calcium deficiency may have impaired consciousness, similar to epileptic seizures, manifested as generalized convulsions. When the body is deficient in calcium, it is recommended that the patient should eat more calcium-containing foods, such as milk, soy products, etc., and if necessary, can take calcium tablets under the guidance of the doctor, and in severe cases, can be given intravenous calcium gluconate.