<unk>  refers to a psychological disturbance that develops in response to a stressor.<unk> s are caused by specific sources of stress, such as severe personal crisis (divorce, death of loved one, recent abuse, recent job changes) or major unexpected negative events (tornado or fire destroys a person's home). The usual symptoms mimic depression, anxiety, or sleep<unk> ; however the disturbance<unk>  is short-term and can usually be treated with counseling or mild short-term medication. If the problem persists more than six months after removal of the stressor, the person may have a more permanent problem, such as a chronic mood or sleep<unk> .
Adjustment disorder
Depression 
Post traumatic stress disorder
Somatization disorder
Acute stress disorder
Substance-related disorder
Situational depression
Complex post traumatic stress disorder