Convulsions and coma are mainly seen in the following diseases: First, acute cerebrovascular disease, such as middle-aged and elderly patients with a past history of hypertension, diabetes, hyperlipidemia, sudden coma with convulsions, epileptic persistence, need to do cranial CT or MRI to understand whether there is brain hemorrhage or an acute large cerebral infarction. Some diabetic patients with poor glycemic control may develop diabetic ketoacidosis or hyperosmolar coma with coma and limb convulsions, and can have their blood glucose and liver and kidney functions and electrolytes measured. Third, the patient should be asked whether he/she has taken drugs or has food poisoning in the past, which can also cause coma and convulsions. In conclusion, convulsions and coma are mainly seen in the above-mentioned causes.