Sleeping convulsions leading to coma at night may be caused by cerebrovascular disease, epilepsy, carbon monoxide poisoning and other factors. 1. Cerebrovascular disease: If you have a sudden cerebral hemorrhage or cerebral infarction while you are sleeping, you may have a sudden convulsion and coma, which is mostly seen in people with cerebrovascular risk factors such as hypertension, diabetes, hyperlipidemia and long-term smoking. 2. Epilepsy: epilepsy is a disease of paroxysmal brain dysfunction caused by excessive excitability of the brain and excessive neuronal discharge. When the patient’s epilepsy is poorly controlled, seizures can occur during sleep, and epileptic status epilepticus may result in coma, foaming at the mouth and other symptoms. 3. Carbon monoxide poisoning: when the family heating coal stove and gas leakage, etc., can be in the sleep of the brain due to lack of oxygen leading to convulsions, coma and other symptoms. When the patient sleeps at night convulsions lead to coma, need to be sent to the hospital in time for examination, identify the cause of the disease, under the guidance of the doctor standardized treatment.