Adjustment Disorder:

A psychological response to an identifiable stressor or stressors that results in the development of clinically significant emotional or behavioral symptoms. The clinical significance of the reaction is indicated either by marked distress that is in excess of what would be expected given the nature of the stressor or by significant impairment in social or occupational functioning. Note: Although combat stress reactions could be considered adjustment disorders, they are in practice not classified this way at first, in order to keep them from being treated as mental health problems until it is clear that they can not respond adequately to pre-mental health interventions.