Dissociative identity disorder
Lawyers and doctors who work with the law also consider DID to be very controversial.  Since the 1990s, DID has become more common in courts. People have tried to avoid going to prison for such crimes as murder and serial rape by claiming to have DID, and lawyers and judges are concerned about people pretending to have DID to avoid going to prison.  The first time this happened was in 1976, and since that time most people who commit crimes and claim it was because of DID have gone to prison.