Written by Pam MS, NCSP | Fact checked by Psychology Dictionary staff 

is defined by the DSM (diagnostic statistical manual) as: a psychiatric disorder in which the principal feature is mood disturbance. Mood disorders include the depressive disorders (e.g., MAJOR DEPRESSIVE DISORDER, DYSTHYMIC DISORDER), the BIPOLAR DISORDERS, MOOD DISORDERS DUE TO A GENERAL MEDICAL CONDITION, SUBSTANCE-INDUCED mood disorder, and not otherwise specified, which does not meet the diagnostic criteria for any of the specific mood disorders..

MOOD DISORDER: "Mood disorders can affect both females and males equally- they typically become noticeable after life events shock an individual into mood or depressive disorders."

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