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National Institutes of Mental Health: “Depression.”
Anxiety and Depression Association of America: “Understand The Facts -- Depression.”
FamilyDoctor.org, American Academy of Family Physicians: “Persistent Depressive Disorder (PDD).”
Mayo Clinic: “Bipolar Disorder.”
American Psychiatric Association: “Seasonal Affective Disorder (SAD).”
NHS Choices: “Psychotic Depression.”
Mayo Clinic: “Postpartum Depression.”
Cleveland Clinic: “Premenstrual Dysphoric Disorder (PMDD).”
Mayo Clinic: “Adjustment Disorders.”
National Alliance on Mental Illness: “Situational Symptoms or Serious Depression: What’s the Difference?”
Mayo Clinic: “Atypical Depression.”
Singh, T. Atypical Depression. Psychiatry, published online April 2006.
National Network of Depression Centers: “Treatment Resistant Depression.”
Ayuso-Mateos J.L. From Depressive Symptoms to Depressive Disorders: The Relevance of Thresholds. The British Journal of Psychiatry. April 2010.
Child Mind Institute: “DMDD: What Is It?”
Reviewed by Jennifer Casarella, MD on January 16, 2020
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