<unk>  is a maladaptive response to a psychosocial stressor. It is classified as a mental disorder. The maladaptive response usually involves otherwise normal emotional and behavioral reactions that manifest more intensely than usual (considering contextual and cultural factors), causing marked distress, preoccupation with the stressor and its consequences, and functional impairment. Diagnosis of<unk>  is common. Lifetime prevalence estimates for<unk> ults range from five percent to 21%.<unk> ult women are diagnosed twice as often as men. Among children and<unk> olescents, girls and boys are equally likely to be diagnosed with an<unk> .<unk>  was introduced into the Diagnostic and Statistical Manual of Mental Disorders in 1980 (DSM-III). Other names for<unk>  are stress response syndrome (new name as of 2013) and situational depression since it is one of the most common symptoms.
Adjustment disorder
Late life depression
Stress-related disorders
Depression 
Somatization disorder
Acute stress disorder
Transference neurosis
Substance-related disorder