High blood pressure causes head numbness, mainly consider the following points: first, elevated blood pressure leads to insufficient blood supply to the cerebral circulation, causing insufficient blood supply to the scalp causing head numbness. Second, high blood pressure patients are prone to cause vasospasm in the head, the blood vessels supplying the scalp spasm, ischemia leading to numbness of the head. Third, hypertension patients usually the most common symptoms for dizziness, headache, mainly cerebral arterial spasm contraction, insufficient blood supply to brain tissue caused by ischemia, hypoxia. Therefore, hypertensive patients should control blood pressure to avoid the symptoms of head numbness and dizziness.