depressive disorders

• disruptive mood dysregulation disorder - Chronic, severe, and persistent irritability. 

  • Frequent temper outbursts that are grossly out of proportion in intensity or duration to the situation or provocation.
  • persistently irritable or angry most of the day, nearly every day, and is observable by others
  • present for 12 months
  • symptoms begin before age 10
• Persistent Depressive Disorder

  • Depressed mood for most of the day, for more days than not, as indicated by either subjective account or observation by others
  • for "at least 2 years".
  • also known as dysthymia
  • chronic, persistent low-level depression
• major depressive disorder

  • Five (or more) of the nine symptoms have been present during the same 2-week period and
  • represent a change from previous functioning: at least one of the symptoms is either (1) depressed mood or (2) loss of interest or pleasure.
  • episodic
  • With a gap of at least 2 months between them.