Dizziness and mental inattention. I. It is mainly seen in cerebral insufficiency of blood supply. If the patient has insufficient blood supply to the vertebrobasilar artery, dizziness, nausea and vomiting can occur, and ataxia and balance disorders can also occur. Long-term cerebral insufficiency can cause cerebral ischemia and hypoxia and lead to mental inattention, thought disorder, and even memory loss, and severe insufficiency of blood supply can cause cerebral infarction. Second, it may also be seen in long-term mental stress, excessive tension, overwork, neurasthenia and poor sleep. Prolonged poor sleep may lead to cerebral ischemia and hypoxia, thus causing dizziness and lack of concentration in patients, who should improve their sleep, relax, reduce stress, and participate in physical exercise appropriately, which may reduce their symptoms.