Persistent Depressive Disorder
If a patient displays signs of depression for two years or longer, it is known as persistent depressive disorder. This term describes two conditions on opposite sides of the spectrum previously known as dysthymia, which is low-grade persistent depression, and chronic major depression. The symptoms of persistent depressive disorder include a change in appetite, sleeping too much or too little, fatigue or a lack of energy, low self-esteem, difficulty concentrating and making decisions, and feeling hopeless, similar to the symptoms of major depression. Again, similar to major or clinical depression, a patient can be treated with psychotherapy, medication, or a combination of the two.
Keep reading to find out about manic depression, often known as bipolar disorder, next.