The reasons for the patient’s numbness in the top of the head and scalp are considered to be the following: 1. Many patients will experience symptoms of numbness in the top of the head and scalp when they are overworked, emotionally tense or stimulated by certain unexpected events. 2. Patients who have elevated blood pressure will also feel numbness and swelling in the top of the head, which will be evident when the patient’s high pressure is greater than 180 mmHg. 3. The symptoms of scalp and numbness are related to the patient’s exposure to cold. Because the case of cold and moisture will lead to the spasm and contraction of the blood vessels under the patient’s scalp. The nerves under the scalp are stimulated, which will also manifest as the symptoms of numbness of the top of the head and scalp, and the patient may be accompanied by numbness and pain of the scalp.