Criteria for a Major Depressive Episode:
1) Five or more of the following symptoms being present during the same 2-wk period and represent a change from prev functioning; with at least on if the symptoms being 1) Depressed mood or 2) Loss of interest or pleasure
i) Depressed Mood
A person may report feeling "sad" or "empty" or may cry frequently. Children and adolescents may exhibit irritability.
ii) Decreased Interest or Pleasure
A person may show markedly diminished interest or pleasure in all, or almost all, daily activities.
iii) Weight Changes
Significant changes in weight when not attempting to gain or lose (a gain or loss of 5% or more in a month) may be indicative of depression. In children, this may also present as a failure to make expected weight gains.
iv) Sleep Disturbances
Insomnia or hypersomnia nearly everyday.
v) Psychomotor Agitation or Retardation
The person may be observed to be either agitated and restless or physically slowed down in their movements.
vi) Fatigue
Deep fatigue or a loss of energy nearly everyday.
vii) Feelings of Worthlessness or Guilt
Feel that they have no value or they may feel inappropriately guilty about things they have no control over.
viii) "Brain Fog"
Diminished ability to think, concentrate or make decisions.
ix) Thoughts of Death
Recurring thoughts of death, especially thoughts of suicide, with or without a specific plan.
2) Symptoms do not meet criteria for Mixed Episode
3) Symptoms cause clinically significant distress or impairment.
Taken from:
and
Abnormal Psychology Core Concepts
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