Which age is typically noted for the onset of autism symptoms?

The onset of autism symptoms is typically recognized before age 3. Early signs can include developmental delays in communication and social skills, as well as atypical behaviors such as limited eye contact, lack of response to name being called, and challenges in understanding social cues. Research indicates that many children with autism begin to exhibit noticeable symptoms in the first two years of life, which is crucial for early diagnosis and intervention. Identifying these symptoms early allows for timely support strategies to be implemented, which can significantly enhance developmental outcomes.

The other age ranges provided are not typically associated with the earliest manifestations of autism. Symptoms that emerge later, such as between ages 4-5, after age 6, or during adolescence, are usually not indicative of the onset of autism, as the developmental milestones expected at those ages would differ significantly from the early signs recognized in infants and toddlers. Early intervention is essential, and recognizing the signs before age 3 can lead to better support and resources for the child and their family.