Failure to respond to two or more trials of antidepressant monotherapy or failure to respond to four or more trials of different antidepressant therapies. (Campbell's Psychiatric Dictionary, 9th ed.)
Also Known As:
Depressive Disorder, Treatment-Resistant; Refractory Depression; Therapy-Resistant Depression; Treatment Resistant Depression; Depression, Refractory; Depression, Therapy-Resistant; Depression, Treatment Resistant; Depressions, Refractory; Depressions, Therapy-Resistant; Depressions, Treatment Resistant; Depressive Disorder, Treatment Resistant; Depressive Disorders, Treatment-Resistant; Disorder, Treatment-Resistant Depressive; Disorders, Treatment-Resistant Depressive; Refractory Depressions; Resistant Depression, Treatment; Resistant Depressions, Treatment; Therapy Resistant Depression; Therapy-Resistant Depressions; Treatment Resistant Depressions; Treatment-Resistant Depressive Disorders