Clinically, patients always appear confused symptoms, the common reasons are as follows: 1, the most common reason is caused by the patient’s lack of sleep. For example, patients with insomnia, dreamy, late night, low quality of sleep, during the daytime, patients will be manifested as dizziness, confusion, poor concentration, memory loss, mental depression, is a cerebral neural dysfunction caused by. 2, there is also a clinical patient always appear confused, may be because the blood is in a high fat, high viscosity, such as high lipid, high blood glucose, Fibrinogen is very high, will lead to the patient’s cerebral blood flow rate is slowed down, the patient will show for always confused symptoms. 3, there is also a large part of the clinical people, such as obese, because of the existence of sleep apnea, snoring and other problems lead to lack of oxygen in the brain, but also will show for always confused.