impairment of motor function that significantly interferes with activities of daily living or academic achievement, and is not due to a general medical condition , such as muscular dystrophy or cerebral palsy. Performance in daily activities that require motor coordination is substantially below that expected, given the person's general intelligence and chronological age. This may be manifested in marked delays in achieving the main motor milestones of sitting, crawling and walking, or such problems as poor handwriting, knocking over or dropping things, difficulty in self -help skills or poor performance in sport. Poor concentration and attention control, and physical restlessness or over-activity may be an additional problem. It is not uncommon for such children to be described by teachers as poorly motivated or lazy.
Dysthymic disorder (DD) or Dysthymia : dysthymic disorder (DD) or dysthymia refers to a form of depressive disorder characterized by at least 1 year (2 years in adults) of depressed mood for more days than not that is accompanied by additional depressive symptoms that do not meet criteria for a major depressive episode . In comparison to Major depressive disorder, Dysthymia is milder, but more long-term.