What is the reason for poor headache and memory? There are several reasons for poor headache and memory: the first one is high blood pressure, especially long-term high blood pressure leads to atherosclerosis, which will lead to ischemia and hypoxia of the brain tissue, so there will be poor headache and memory. The second reason is caused by psychosomatic factors, such as depression, which is mainly characterized by depressed mood, loss of interest, and loss of energy. In addition, the patient will also have some physical symptoms, mainly headache, poor sleep, memory loss and so on, so depression can also lead to the patient to appear the above phenomenon. The third reason is some intracranial diseases, mainly encephalitis, especially viral encephalitis, and intracranial tumors, which can lead to headache and poor memory.