A clinically based rule of thumb for classifying delusions.

Conventional psychodynamic treatment assumptions sometimes warned against direct confrontation of a patient's delusions because delusions were believed to serve defensive functions. Based in part on research findings some have recently asserted that it can be beneficial for the clinician to challenge a patient's delusional beliefs. Short-term positive results from such confrontations have been reported. I review clinical and research considerations that may aid the clinician in deciding when confrontation may be beneficial. I identify a class of delusions that are unlikely to respond to confrontation. Alternative clinical responses to this class are suggested.