Delusional Disorder Delusional disorder is a mental illness in which the patient presents with delusions, but with no accompanying prominent hallucinations, thought disorder, mood disorder, or significant flattening of affect. People suffer from that condition cannot make the difference between the reality and their imagination. It is a very rare psychological condition. Most of the people who suffer from that condition tend to function and socialized normally outside of their delusion. Delusional disorder
