The causes of flushing and headache are mainly seen in the following aspects: First, drug side effects: If a patient with hypertension takes oral calcium antagonists, such as nifedipine tablets, for a long time, the patient will have flushing and headache, and the headache is mainly pain in the forehead, and the symptoms can be relieved after replacing the blood pressure lowering drugs. Second, acute infection: patients need to be asked whether they have fever, patients in acute infection can be manifested as flushing, headache, can be routine blood and temperature measurement to clarify the diagnosis. Third, hypertension: Patients should be asked if they have a history of hypertension. Patients with hypertension can show symptoms of flushing, headache or dizziness when their blood pressure rises, and blood pressure measurement can be clarified. Therefore, flushing and headache are mainly seen for the above reasons.