Skip to content

Delusional disorder

Summary of Delusional disorder
Delusional disorder is a psychiatric condition in which the patients present with delusions, but with no accompanying prominent hallucinations, thought disorder, mood disorder, or significant flattening of affect. Delusions are a specific symptom of psychosis. Apart from their delusions, people with delusional disorder may continue to socialize and function in a normal manner and their behaviour does not generally seem odd or bizarre. However, the preoccupation with delusional ideas can be disruptive to their overall lives.



Behavioral sciences

Psychological disorders

Mood disorders
Anxiety disorders
Obsessive-compulsive disorders
Stress-related disorders and abuse
Psychotic disorders
Cognitive and dissociative disorders
Eating disorders
Personality disorders
Somatoform and factitious disorders
Substance use disorders and drugs of abuse
Sleep disorders
Sexual dysfunction disorders
Pediatric disorders
Psychiatric emergencies
Psychological disorders review

Delusional disorder


0 / 7 complete


1 / 2 complete
High Yield Notes
6 pages

Delusional disorder

7 flashcards

USMLE® Step 1 style questions USMLE

2 questions

USMLE® Step 2 style questions USMLE

1 questions

A 42-year-old man comes to the clinic because his wife believes that he has been "losing his mind" for the past two months. He works as a lawyer and recently was named employee of the month. He believes that the Earth will be hit by an comet within the next year and has begun to stockpile water and cans of food in his basement. He admits that he has no evidence that this will occur, but simply "knows" that it is going to happen. He exercises regularly and gets 8 hours of sleep each night. Family history is significant for a brother with schizophrenia. He takes no medications. His temperature is 37.0°C (98.6°F), pulse is 68/min, respirations are 11/min, and blood pressure is 132/78 mm Hg. Physical examination shows a well-appearing male in no apparent distress. Laboratory studies are unremarkable. Which of the following is the most likely diagnosis?

External References