Mainly irritable and debilitating in the process of mental activity, including mental excitement and fatigue, inability to sustain mental work, inattention, memory loss, thinking difficulties, slow understanding, emotional irritability, and reduced control ability And fatigue, often accompanied by sleep disorders, muscle tension headache and autonomic dysfunction. Patients with these symptoms have poor mood, depression and anxiety, and their subjective feelings are often more prominent than objective signs. It is more common in neurasthenia and other neuroses, and can also be seen in certain stages of mania and schizophrenia, high blood pressure, infection, poisoning, head trauma, cerebrovascular disease and mental disorders caused by physical diseases.
