It can be accompanied by depression, neurasthenia, insomnia, epilepsy and other symptoms.
Depression is a form of manic depression. The typical symptoms were low emotion, slow thinking, reduced speech and slow movement. About 15% of patients with depression died of suicide.
Neurasthenia is a kind of neurosis characterized by brain and body dysfunction. It is characterized by easy to be excited and easy to be tired. It is often accompanied by emotional symptoms such as tension, worry and irritability, and physiological disorders such as muscle tension pain and sleep disorder. These symptoms are not secondary to physical diseases and brain organic lesions, and are not part of any other mental disorders. But patients may have persistent emotional tension and mental pressure before illness.