After fainting and foaming at the mouth first consider seizures, 1, generally the patient has a previous history of epilepsy, due to some triggers, can lead to seizures, the patient can faint, loss of consciousness, limb convulsions, foaming at the mouth. The patient should be given protective measures to avoid tongue bites, and the patient should be given an EEG, and the patient should be given antiepileptic treatment, either intramuscular diazepam or oral seizure control drugs, and the patient should be advised to consult a neurologist for standardized treatment of epilepsy. 2. Fainting and foaming at the mouth can also be seen in athlete’s seizures, which are caused by interruption of blood ejection from the heart, resulting in cerebral ischemia, inducing the patient to faint and foam at the mouth. The patient should be given electric defibrillation therapy if necessary. If no defibrillation equipment is available, the patient should be given cardiopulmonary resuscitation and sent to the hospital in time by calling 120.