The pain in the back of the head when you exert yourself in the stool is considered to be caused by high blood pressure, cerebral infarction, intracranial space-occupying lesions and other diseases. 1. Hypertension: when hypertensive patients exert themselves, it will increase blood pressure, resulting in increased intracranial blood pressure, which triggers throbbing pain in the back of the head, and can be accompanied by dizziness, palpitations, tinnitus, blurred vision and other symptoms. 2. Cerebral infarction: mainly due to atherosclerosis of large arteries, small artery occlusion and other reasons, caused by the brain blood circulation disorder. When patients with cerebral infarction strain to have a bowel movement, the intracranial pressure will be increased, resulting in throbbing pain in the back of the head, which may be accompanied by vomiting, dizziness and other symptoms. 3. Intracranial space-occupying lesions: refers to all kinds of hematomas, tumors, and parasitic diseases of the brain, etc. If there are patients with intracranial space-occupying lesions, the intracranial pressure will be increased when the patient exerts himself to have a bowel movement, which will lead to throbbing pain in the back of the head, accompanied by dizziness, projectile vomiting, and visual disturbances, etc. The patient will also have pain in the back of the head when he exerts himself to have a bowel movement. There are many other causes of pain in the back of the head when straining, so it is recommended that patients go to the hospital in time, complete the examination, make a clear diagnosis, and receive treatment as soon as possible.