There are many clinical causes of headache and confusion, most of them are caused by poor sleep, mental stress and emotional tension. Patients may suffer from headache, confusion and weakness. Headache and confusion should be considered to be caused by cerebral atherosclerosis and inadequate blood supply to the brain. The patient’s cerebral blood flow slows down and the brain is in a chronic state of oxygen deprivation, which stimulates the pain-sensitive structures in the brain, resulting in headache, confusion and dizziness. Headache and confusion may also be caused by cold or fever. When the patient gets cold or has a cold, the body temperature rises, resulting in headache and confusion. It may also happen when the weather changes, such as when the weather is too hot and causes the patient to suffer from heatstroke and other problems.