Symptoms before a heart attack are chest pain, dizziness, and vomiting. Symptoms before brain attack are headache, dizziness, nausea and vomiting. Chest pain is the most common pre-infarction symptom, and is usually a feeling of pressure and tightness, especially in the left arm or neck. Chest pain caused by a heart attack often lasts longer than 30 minutes, and patients often feel weak, even fainting. However, asymptomatic patients also exist. Pre-infarction symptoms commonly include headache and dizziness, nausea and vomiting, mainly due to cerebral blood vessel obstruction. It can also be seen in speech, intelligence, consciousness disorder, one side of the eyes staring, facial and tongue paralysis, limb hemiparesis, incontinence, dysphagia, choking on drinking water and other symptoms. If you find the above symptoms, you should consult a doctor in time to avoid delaying the condition, and at the same time, don’t overwork in your life and pay attention to rest.