Dreaming and forgetfulness may be caused by excessive mental tension and work pressure. If the long time life is not regular, excessive late night may also be caused, in addition, can also be seen cerebral blood supply is insufficient. Chronic cerebral blood supply insufficiency may cause ischemic and hypoxic encephalopathy, and patients may suffer from inattention, memory loss, disordered thinking, and in serious cases, sleep disorders, which may be manifested as difficulty in falling asleep, or waking up early during sleep. Some patients may show more dreams during sleep, which affects the patient’s sleep quality. If patients with long-term hypertension, high blood pressure may cause hypertensive encephalopathy, patients can also appear the above symptoms; in addition, it may also be due to neurasthenia, anxiety disorders. When neurasthenia, patients can have sleep disorders, and in severe cases, memory loss may occur. If the patient has an anxiety disorder, there can be difficulty in falling asleep, or there can be excessive dreams during sleep, or there can be anxiety, restlessness, panic and fear, which may also affect the patient’s memory.