The causes of nausea and headache are as follows: 1. Patients often stay up late, lack of sleep will lead to brain fatigue and cause nausea and headache, usually pay attention to rest, avoid exertion, reasonable arrangements for work and rest time. 2. Acute gastritis, patients mostly have a history of eating unclean or spicy and stimulating, raw and cold food, there will be fever, nausea and headache. 3. 3.Hypertension disease, mostly seen in patients with a history of hypertension, previous blood pressure control is not ideal, high blood pressure will lead to headache, nausea, blurred vision and other symptoms, need to regularly monitor blood pressure and actively lower blood pressure treatment. 4.Migraine, mainly manifested as one side of the headache is a continuous throbbing pain, often accompanied by nausea, vomiting, hearing loss It can be treated with oral pain medication.