From ICD, schizotypal PD. Seems very confusable with ASD.

NOT NECESSARILY ALL, but some of the following are present:

Inappropriate or constricted affect (the individual appears cold and aloof);
Behavior or appearance that is odd, eccentric or peculiar;
Poor rapport with others and a tendency to withdraw socially;
Odd beliefs or magical thinking, influencing behavior and inconsistent with subcultural norms;
Suspiciousness or paranoid ideas;
Obsessive ruminations without inner resistance, often with dysmorphophobic, sexual or aggressive contents;
Unusual perceptual experiences including somatosensory (bodily) or other illusions, depersonalization or derealization;
Vague, circumstantial, metaphorical, over-elaborate or stereotyped thinking, manifested by odd speech or in other ways, without gross incoherence;
Occasional transient quasi-psychotic episodes with intense illusions, auditory or other hallucinations and delusion-like ideas, usually occurring without external provocation.

From Wikipedia:

Schizotypal personality disorder is a personality disorder characterized by a need for social isolation, anxiety in social situations, odd behavior and thinking, and often unconventional beliefs. People with this disorder feel extreme discomfort with maintaining close relationships with people, and therefore they often do not. People who have this disorder may display peculiar manners of talking and dressing and often have difficulty in forming relationships. In some cases, they may react oddly in conversations, not respond or talk to themselves. They frequently misinterpret situations as being strange or having unusual meaning for them; paranormal and superstitious beliefs are not uncommon. People with this disorder seek medical attention for things such as anxiety, depression, or other symptoms. Schizotypal personality disorder occurs in less than 3% of the general population and is slightly more common in males.