Persistent Depressive Disorder (PDD)
Formerly 'Dysthymia Disorder'
A person diagnosed with PDD has episodes of major depression that last for at least two years, along with periods of less severe symptoms. Examples of symptoms include lost interest in normal activities, hopelessness, low self-esteem, low appetite, low energy, sleep changes and poor concentration.
Read more about prevention and treatment for PDD and other mood disorders.