Autism Spectrum Disorder (ASD) is often diagnosed between 18 months and 3 years of age, though signs can appear earlier. Developmental screenings at well-child visits—typically at 18 and 24 months—help detect early signs such as limited eye contact, delayed speech, or repetitive behaviors.

Some children receive an official diagnosis as early as 12 months, especially when evaluated by developmental pediatricians or psychologists using tools like the ADOS-2 (Autism Diagnostic Observation Schedule). However, in mild or high-functioning cases, diagnosis may occur later—sometimes not until school age—when social or communication challenges become more apparent.

Early identification matters. Studies show that children who begin ABA therapy before age three experience significant improvements in communication, learning, and adaptive behaviors.

If you suspect your child may be showing early signs of autism, it’s best not to wait. Early intervention can make all the difference.

At Blossom ABA Therapy, we specialize in helping families access early, effective ABA services in Georgia, Tennessee, and Virginia tailored to their child’s unique ABA therapy needs. 

For initial consultation, contact us today.

SOURCES

https://www.autismspeaks.org/signs-autism

https://raisingchildren.net.au/autism/learning-about-autism/about-autism/asd-overview

https://www.cdc.gov/ncbddd/actearly/autism/curriculum/documents/early-warning-signs-autism_508.pdf

https://my.clevelandclinic.org/health/articles/autism

https://healthychildren.org/English/Pages/default.aspx