There are several causes of peripheral cramps: 1. ionic disorders, the most common cause of which is hypocalcemia that causes twitching of the hands and feet and therefore cramps all over the body. 2. common causes are cerebrovascular diseases, often due to acute infectious encephalitis, cerebrospinal meningitis, bacterial encephalitis, septic encephalitis, and viral encephalitis that cause peripheral cramps. 3. epilepsy, when brain cells discharge abnormally The clinical symptoms of cramps and convulsions all over the body can also occur, such as transient seizures and tonic spasmodic seizures will appear convulsions, foaming at the mouth and other clinical symptoms. 4, other cerebrovascular accidents, such as acute cerebral hemorrhage, acute cerebral infarction, acute cerebral embolism will also appear cramps all over the body.