Headache, confusion and dizziness may have the following causes: 1. Many people experience headache, confusion, dizziness, peripheral weakness and fever when they have an infectious disease. For example, in the case of upper respiratory tract infection, the patient may also have symptoms such as sore throat, nasal congestion, runny nose, sneezing, etc. 2, most people have such symptoms caused by functional reasons, such as poor sleep, emotional tension, stress, which can also lead to headache, confusion, dizziness, weakness, etc. 3, may be caused by insufficient blood supply to the brain, if the patient’s blood is in a high-fat, high viscosity state will lead to cerebral blood If the patient’s blood is in a high-fat, high-viscosity state, it can lead to slow cerebral blood flow. Because the patient himself has the problem of cerebral vascular stenosis, when some causes cause cerebral vascular spasm, the patient will show the symptoms of headache, confusion and dizziness.