Dizziness, confusion, and nausea may be caused by insufficient blood supply to the brain, or they may be caused by exertion, mental stress, cerebral neurological disorders, hypertension, etc., and should be analyzed in conjunction with the patient’s form of illness and the degree of dizziness. 1, if the patient is elderly and has a history of cerebral arteriosclerosis and cerebral vascular stenosis, dizziness, confusion, and nausea should be considered to be caused by insufficient blood supply to the brain. If the patient has a history of cerebral arteriosclerosis or cerebral vascular stenosis, dizziness, confusion and nausea should be considered to be caused by insufficient cerebral blood supply. 2. If the patient has unstable blood pressure control or elevated blood pressure, the above symptoms may be accompanied by head swelling and headache. 3.