This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
Delusion is not present in - 
Select and explain. 
A. Delirium, B. Mania, C. Depression, D. Compulsive disorder
D: Compulsive disorder
Answer: D: Compulsive disorder 
Explanation: Delusions are seen in psychosis (Schizophrenia, Mania, depression, other psychotic disorder-delusional disorders and Schizoaffective disorders) and organic mental disorders (Delirium, substance abuse or withdrawal).
Delusions are not seen in neurosis:- Anxiety, obsessive-compulsive disorder, Dissociative (conversion) disorders, somatoform disorders, stress-related disorders.