Which physical findings of the head and hands are characteristic of autism spectrum disorder (ASD)?

Updated: Sep 30, 2019
  • Author: James Robert Brasic, MD, MPH; Chief Editor: Caroly Pataki, MD  more...
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Aberrant palmar creases and other dermatoglyphic anomalies are more common in children with autistic disorder.

Although the head circumference of children with autism may be small at birth, many children with autism experience a rapid increase in the rate of growth from age 6 months to 2 years. [3] The head circumference is increased in a subgroup of approximately one fifth of the population of children with autistic disorder without known comorbid conditions. [122] Increased head circumference is more common in boys and is associated with poor adaptive behavior. The head circumference may return to normal in adolescence. [4]

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