I. What is depressive disorder? Depressive disorder is a group of mood disorders or affective caused by various causes with depression as the main symptom. The disorder is a group of clinical symptoms or states centered on the self-experience of depressed state of mind. Second, what are the manifestations of depressive disorder? Depressive disorder is different from the general depression, its core symptoms include low mood, lack of interest and lack of pleasure. The main features and manifestations are as follows: 1. Mood: depressed mood, lack of interest, and lack of pleasure. 2. Behavioral aspects: reduced activity, slow or nervous movements, irritability, and increased aggressive behavior. 3. Cognitive: slow thinking, self-blame and self-condemnation. 4. Somatic aspects: sleep disturbance, loss of appetite, loss of libido, weight loss, constipation, somatic pain and discomfort, fatigue, autonomic dysfunction, etc. 5, other aspects: suicidal ideas and behavior, severe cases have psychotic symptoms. Third, how should depression be treated? If you have suffered from depressive disorder, you should go to the hospital in time to receive formal diagnosis and treatment, the main treatment methods include: 1, drug treatment: mainly antidepressants, antipsychotics, etc. 2.Physical therapy: such as repetitive transcranial magnetic stimulation (rTMS), etc. 3, psychotherapy: including cognitive-behavioral therapy, psychoanalytic therapy, family therapy, music therapy, etc.