Identity Problem

This came up running vignette practice questions.  What exactly is an Identity Problem in the DSM?  An answer:

Identity Problems are characterized by severe distress and uncertainty about issues related to identity, such as long-term goals, career choice, friendship patterns, sexual orientation and behavior, moral values, and group loyalties.  The debilitating feature of Identity Problem is succinctly summarized by the question, Who Am I?…[A]cademic, social, and occupational functioning are impaired, with varying degree of severity, for a period of more than three months.