High levels of leukocytes cause headaches in the body as a result of an inflammatory response, and leukocytes are a type of autoimmune cell. When external bacteria and viruses invade the body, the level of leukocytes will increase and continuously gather to trigger an inflammatory response against external bacteria as a spontaneous physiological reaction of the body. The body can recover on its own, but if not, it needs to drink more water or take medicines such as cold and flu granules, Chai Hu Tang, Gui Zhi Tang, etc. This condition is usually caused by external wind and cold, which can cause the body to have a cold, and in addition to headache, there will also be generalized muscle pain and other symptoms, but will not cause harm to the body, if infected with the epidemic virus need to go to the hospital for treatment.