The symptoms of headache after exertion are caused by temporary ischemia and hypoxia in the brain, and the common diseases are as follows: 1. cerebrovascular spasm, acute headache can be triggered by excessive mental tension, overexertion, etc. The symptoms of headache are caused by sympathetic excitation and vasospasm after exertion. 2. hypertension, sympathetic excitation after exertion can cause increased heart rate, headache, sweating, more vasospasm, high blood pressure, redness, etc. 3. The symptoms of headache are caused by high blood pressure and insufficient blood supply to the cerebral arteries. 3, cerebrovascular disease, if you usually have cerebrovascular disease, after exertion can aggravate the symptoms of insufficient blood supply to the cerebral arteries, dizziness, headache and other uncomfortable symptoms, usually avoid strain, control blood pressure, it is best to go to the hospital for further examination to confirm the diagnosis.