According to HealthyPlace.com, here are the symptoms of Autism.
Impairment in social and emotional reciprocity that ranges from abnormal social approaches and failure to participate in typical give-and-take conversations to diminished sharing of interests and emotions as well as failure to respond to social cues and interactions.
What does that even mean???? I guess it means that we have general problems and difficulties with social interaction. But a little more deeply, I guess it means that in conversations we tend to either do all the talking or let the other person do all the talking. We may approach people in a way that is a bit abnormal, which may entail diving straight into our chosen topic without pausing for small talk. Don’t look at me funny; These are just guesses. We may share too much or too little of our interest and/or emotions. We may also fail to see when the other person is getting bored, or when the other person may be trying to make friends with us or take advantage of us.
Impairment in use and understanding of nonverbal communications used in social interactions, such as inability to make eye contact and abnormalities in body language. These children also have difficulty understanding the use of physical gestures and often have a complete lack of facial expression.
This basically means we have difficulties understanding and using body language.
Impairment in developing and maintaining social relationships
Well, this one is obvious.