MRCP2-3786

MRCP2-3786

A 49-year-old man presents to a psychiatric clinic following a referral from his GP due to his eccentric behavior. He has no medical history and is not taking any regular medications. There is no history of substance abuse.

Upon examination, he appears disheveled and is dressed entirely in black clothing. He is accompanied by his mother.

During the interview, it becomes apparent that he has always been perceived as strange by others and has difficulty forming social connections. He experiences anxiety in social situations and is fixated on ghosts, even going so far as to attempt to purchase ghost-hunting equipment. He occasionally feels the presence of spirits in his home as a cold breeze.

Throughout the interview, his affect is inappropriate, and he avoids eye contact while laughing at unusual points in the conversation.

What is the appropriate diagnosis for this personality disorder?