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Collingswood, NJ
A 36-year-old female asked:

When do signs of autism first appear? passed mchat but was diagnosis with hfa at 3 years. other than late talking, other signs didn't appear till 2.8 years.

3 doctor answers5 doctors weighed in
Dr. William Goldie
Pediatric Neurology 49 years experience
Not specific: Autism is a disorder of appropriate social and verbal development. It may present in infancy as a defect in social awareness and eye contact, or later in childhood with regression in verbal language and inability to tolerate social settings. Some acquire autism due to injury, infection, or other neurological disease. Once signs are apparent, good therapy is necessary at any age.
Dr. Oscar Novick
Pediatrics 59 years experience
Early recognition: Symptoms of autism can be recognized as early as six months.Lack of smiling, lack of response to your voice , and other subtle signs may bean early indication of autism.
Dr. Laura Davies
Psychiatry 25 years experience
This is not unusual for a family. Because children all develop at different rates, autism is easier to diagnose after 2 1/2 to 3 years. With increasing awareness, more children are being diagnosed earlier.
Jan 29, 2013
Dr. Chester Berschling
Psychiatry 51 years experience
First two years: Autism is a disorder, first diagnosed by leo kanner in the 1940's characterized by a lack of social and emotinal relatedness, there is no social smiling, no recognition of important people, ie mother. Often they have blank stares. Poor reaction to shange, prefer things to stay the same. Stereotypical and repetitive movements (finger flap) and repetitive vocalizations. Dsm5 may change things.

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Last updated Oct 4, 2016

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