Schizoid Personality Disorder looks like ASD to me.
Symptoms of Schizoid Personality Disorder:
* Lack of interest in social or personal relationships, preferring to be alone
* Limited range of emotional expression
* Inability to take pleasure in most activities
* Inability to pick up normal social cues
* Appearance of being cold or indifferent to others
* Little or no interest in having sex with another person
If you have inability to pick up on any social cues and have inability to take pleasure in most activities, you have a Pervasive Developmental Disorder of some sort.
I think that 'Schizoid Personality Disorder' should be removed from diagnostic manuals, because symptoms of Schizoid Personality Disorder includes communication delays that was not detected until adulthood.
When I looked at the symptoms of Schizoid Personality Disorder, it looks more like a Communication Disorder than a personality disorder.
Symptoms of Schizoid Personality Disorder:
They do not desire or enjoy close relationships, even with family members.
They choose solitary jobs and activities.
They take pleasure in few activities, including sex.
They have no close friends, except first-degree relatives.
They have difficulty relating to others.
They are indifferent to praise or criticism.
They are aloof and show little emotion.
They might daydream and/or create vivid fantasies of complex inner lives.
Symptoms of Schizoid Personality Disorder that looks like ASD:
* They have difficulty relating to others. (Looks like lack of social skills)
* They are aloof and show little emotion. (Looks like problems with social-emotional reciprocity)
* They might daydream and/or create vivid fantasies of complex inner lives. (Fantasies, especially about imaginary friends is very common in ASD).