Poststroke depression: a biopsychosocial approach.

Poststroke depression (PSD) is a form of geriatric depression that is associated with various negative outcomes. This article reviews existing research concerning the etiology, treatment, and prevention of PSD with particular emphasis on the development of a biopsychosocial conceptualization of PSD etiology and treatment. Existing intervention trials are reviewed. A behavioral model of PSD treatment is presented based on a biopsychosocial understanding of PSD that highlights the potential utility of the lesion location hypothesis in the early poststroke period and the behavioral and social changes that may be linked to depression in the postacute period after stroke.