Yes, autism can be diagnosed before the age of 2. While most diagnoses occur after age 2, signs of autism spectrum disorder (ASD) can be observed as early as 12 to 18 months—or even earlier in some cases.

Early indicators may include limited eye contact, delayed babbling, lack of gestures like pointing or waving, and reduced response to name. Pediatricians often use developmental screenings during routine check-ups to catch early signs.

The Modified Checklist for Autism in Toddlers (M-CHAT) is one common screening tool used between 16–30 months. If concerns arise, a formal diagnostic evaluation by a developmental pediatrician or psychologist may follow.

Early diagnosis is critical—it allows families to begin intervention sooner, which can greatly improve developmental outcomes.

Move Up ABA provides early intervention services tailored to young children, helping them build essential communication, social, and learning skills during the most important years of brain development. Contact us today!


Frequently Asked Questions

1. What is the earliest age autism can be diagnosed?

Some children can be reliably diagnosed by 18 months.

2. What are the early signs of autism?

Lack of eye contact, delayed speech, no social smiling, or unresponsive to name.

3. Is early diagnosis of autism beneficial?

Yes, early intervention can significantly improve long-term outcomes.


Sources:

  • https://www.autismspeaks.org/screen-your-child
  • https://www.nichd.nih.gov/health/topics/autism/conditioninfo/treatments/early-intervention