Mood disorders are a category of illnesses that describe a serious change in mood. Illness under mood disorders includes major depressive disorder, bipolar disorder (mania - euphoric, hyperactive, over inflated ego, unrealistic optimism), persistent depressive disorder (long-lasting low-grade depression), cyclothymia (a mild form of bipolar disorder), and SAD (seasonal affective disorder).
About 20% of the U.S. population reports at least one depressive symptom in a given month, and 12% report two or more in a year.
Kathryn Cullen, MD
Meredith Gunlicks-Stoessel, PhD, LP
Karina Quevedo, PhD
Jia Yuan Teoh
Kristina Reigstad, PsyD