Yale Medical Group:
Signs of autism may show up in babies as young as 1 month old, a new study shows. But the tip-offs are not the usual red flags, such as a lack of eye contact or smiling, the researchers noted. Instead, they found babies who needed neonatal intensive care and were later diagnosed with an autism spectrum disorder were more likely to have abnormal muscle tone and differences in their visual processing than babies who went on to develop normally after time in the neonatal intensive care unit (NICU).
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