Weekly First-aid Topic: Tips for identify disease of comatose person
From:Beijing Municipal Health Commission

What should you do if your family or friends suddenly fall into a coma? Here are a few tips for you to identify the cause.
When epilepsy occurs, it usually manifests as obvious twitching of the whole body, foaming at the mouth, cyanosis of the lips, and heartbeat. The existence of heartbeat is the biggest difference from sudden death of myocardial infarction, which could be judged by touching the carotid artery at the two-finger position of the larynx.
When heart attack occurs, the typical symptoms are respiratory arrest, no pulse and no heartbeat. The pulse and heartbeat can be felt by touching the carotid artery.
Stroke is usually known as cerebral hemorrhage and cerebral infarction. The initial symptoms usually manifest as headaches, dizziness, reflexes, and then nausea and vomiting, unconsciousness and the severe symptom is coma. Patients with stroke are different from those with epilepsy. Stroke patients usually do not have convulsions and patients with sudden death from myocardial infarction have pulse and respiration. Severe stroke patients will have different pupils at the onset of the disease, because the oculomotor nerves of the patient's diseased side are oppressed. If a patient shows symptoms of stroke suddenly, his head should be turned to one side to prevent oral secretions from entering the airway, and 120 emergency service should be called in time to be sent to the hospital for further treatment.