Most of the reasons for headache when using the brain are functional, so there is no need to be nervous because in the process of using the brain, the human brain will consume a lot of energy, especially glucose. For the normal brain, the brain itself does not reserve glucose, but needs blood supply. In the process of brain use, glucose is consumed in a large amount, and the burden of cerebral blood vessels is heavy, which will increase the intracranial blood flow, and some people are more sensitive to feel the headache, and some people will have blood vessel spasm, which will lead to the increase of local blood flow, and headache will occur. In this case, we need to pay attention to two aspects: first, to reduce the use of the brain appropriately, to maintain a relaxed state before studying and working. Second, to adhere to appropriate brain exercise and maintain good brain habits, if you are already used to using the brain, you will not have headaches again. In addition to this state, it is also necessary to pay attention to whether there are intracranial lesions, such as intracranial infections, intracranial tumors, cerebrovascular abnormalities, etc. It is recommended to do relevant examinations for differential diagnosis.