The client is not interested to talk with another person. When he talks, he shares little of his feelings and reactions, focusing instead on impersonal facts and opinions. His partner must take the effort to keep the conversation going.
The client has unusual body language and does not make eye contact. He may not even show any emotional reactions on his face or gesture with his hands. He does not react to non-verbal cues such as boredom or anger expressed by the person he is speaking to.
The client could not make friends. He could not join the imaginative play of other children his age. He has no interest in knowing what other people are doing or saying.
The client keeps repeating certain phrases and actions.
The client keeps insisting on performing certain rituals, playing in the same way and eating the same food. He is unable to tolerate even small changes to his routines.
The client has obsessions with certain objects and interests that are much stronger than a typical interest or liking.
The client has an exaggerated reaction to certain sounds, textures or touch. However, he may not react at all to loud noise and environmental heat/cold.
C. The above symptoms must be present in early childhood.
D. These symptoms prevent the client from doing the basic activities that he is expected to be able to do.