When headaches occur when thinking about things, consider that the patient may have chronic cerebral insufficiency of blood supply. The patient will experience dizziness due to chronic cerebral ischemia and hypoxia, which requires increased oxygen consumption in the brain when the brain is engaged in thinking. In addition, the patient is likely to be in a state of anemia, and a routine blood test is recommended to observe whether there is a decrease in hemoglobin level. Patients may have phytodysfunction and the brain is in a state of exertion and fatigue, and headaches may occur when thinking. In addition, the patient is likely to have a weak constitution, which is referred to by Chinese medicine as a deficiency of qi and blood, and it is recommended that the patient should strengthen his or her constitution and engage in physical exercise. Therefore, for headaches that occur when thinking about things, it is necessary to find the cause of the disease and to provide effective treatment for it.