CCMD-3 Diagnostic Criteria for Depressive Episodes Depressive episodes are dominated by a depressed mood that is out of proportion to its situation and can range from moping to grief and even malaise. In severe cases, psychotic symptoms such as hallucinations and delusions may occur. Anxiety and motor agitation are significant in some cases. Symptom criteria: (1) loss of interest, unpleasant feelings; (2) loss of energy or fatigue; (3) psychomotor retardation or agitation; (4) low self-esteem, self-blame, or feelings of guilt; (5) difficulty in association or reduced ability to think; (6) recurrent thoughts of death or suicidal or self-injurious behavior; (7) sleep disorders, such as insomnia, early awakening, or excessive sleep; (8) sleep disorders. (7) Sleep disorders such as insomnia, early awakening, or excessive sleep; (8) Decreased appetite or significant weight loss; (9) Decreased sexual desire. Severe criteria Impairment of social function, causing distress or adverse consequences to the person. (1) The criteria for symptoms and severity have been met for at least 2 weeks. (2) Some schizophrenic symptoms may be present, but do not meet the diagnosis of schizophrenia. If both symptom criteria for schizophrenia are met, the criteria for depressive episode are met for at least 2 weeks after remission of schizophrenic symptoms. Exclusion criteria Exclude organic psychiatric disorders, or depression due to psychoactive and non-addictive substances. Mild depression with episodes meeting all criteria for 32 depressive episodes except for no or only mild impairment of social functioning. Diagnostic criteria (1) Current episode meeting the criteria for a type of depression and having had another episode meeting the criteria for a depression at least 2 months apart; (2) Never having had a previous episode meeting the criteria for any type of mania, bipolar disorder, or cyclothymic disorder; (3) Exclusion of organic psychiatric disorders, or depressive episodes due to psychoactive and non-addictive substances.