So what should you be looking for? According to the National Institute of Mental Health, these are some of the red flags for autism:
Possible Indicators of Autism Spectrum Disorders
- Does not babble, point, or make meaningful gestures by 1 year of age
- Does not speak one word by 16 months
- Does not combine two words by 2 years
- Does not respond to name
- Loses language or social skills
- Poor eye contact
- Doesn't seem to know how to play with toys
- Excessively lines up toys or other objects
- Is attached to one particular toy or object
- Doesn't smile
- At times seems to be hearing impaired
It's important to remember that there are many possible explanations for most of the symptoms listed above. A child's attachment to a particular toy or difficulty with language skills is not, in itself, a sign of autism.
It's also important to remember that a child who does have excellent language skills may still be diagnosable on the autism spectrum. In fact, some children who are diagnosed with Asperger Syndrome have extraordinary language and reading skills.
copy from : about.com