Dyssomnia refers to the problem in getting to sleep or in obtaining sleep of sufficient quality. It is a primary sleep disorder that involve abnormalities in the amount, quality, or
dyssomnias is a category of sleep disorders that involves difficulties initiating or maintaining sleep. Such disorders are often characterized by problems with getting enough sleep, not sleeping when one wants to, and not feeling refreshed after sleeping.
Dysthymia refers to a form of depressive disorder characterized by at least one year to 2 years in adults of Depressed mood for more days than not, accompanied by additional depressive symptoms that do not meet criteria for a major depressive episode.