#major_depressive_episode  (psychiatry) a state of depression with all the classic symptoms (anhedonia and lethargy and sleep disturbance and despondency and morbid thoughts and feelings of worthlessness and sometimes attempted suicide) but with no known organic dysfunction
  supertype:  depressive_disorder__clinical_depression__depression  a state of depression and anhedonia so severe as to require clinical intervention
  subtype:  involutional_depression  a major depressive episode associated with the climacteric
  subtype:  unipolar_depression  a major depressive episode that occurs without the manic phase that occurs in the classic form of bipolar disorder

No statement uses or specializes major_depressive_episode; click here to add one.