What's wrong with being in a daze all day?

All day drowsy brain confused, first need to rule out the following conditions, such as overtime fatigue, irregular diet, too frequent smoking and drinking, anxiety, tension, insomnia. After excluding these reasons, need to consider the pathological reasons. Head drowsy is the performance of cerebral hypoxia, pathological cerebral hypoxia can be divided into brain cells relative hypoxia and absolute hypoxia. Relative hypoxia such as oxygen thin at high altitude, long-term anemia caused by blood oxygen deficiency, resulting in brain cell hypoxia and brain drowsiness. Absolute hypoxia is more common is cerebral vascular blockage, resulting in insufficient blood supply to the brain or cerebral infarction, resulting in severe hypoxia of brain cells, this situation can cause serious sequelae, such as cognitive decline, hemiplegia, aphasia, etc., need timely treatment.