The DSM-5 Task Force is presently considering whether to adopt parental alienation disorder (PAD) as a mental illness. Although controversy has surrounded PAD since its inception in 1985, pro-PAD groups and individuals have breathed new life into the push to establish it as a mental health diagnosis. In this analysis, we argue that it would be a serious mistake to adopt parental alienation disorder as a formal mental illness in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5).