What Are the Signs of Autism in a 4-Year-Old?

November 19, 2025

Recognizing the signs of autism in a 4-year-old can help parents seek early intervention, which is crucial for improving outcomes. While every child develops differently, there are common signs that may indicate autism:

  1. Communication Challenges: Difficulty with verbal communication, such as limited speech, trouble making eye contact, or struggles with back-and-forth conversation.

  2. Social Difficulties: Avoidance of or challenges in engaging with others, trouble understanding social cues, or limited interest in playing with peers.

  3. Repetitive Behaviors: Engaging in repetitive movements, like hand-flapping or rocking, or becoming overly focused on certain objects or routines.

  4. Sensory Sensitivities: Overreacting or underreacting to sensory stimuli, such as lights, sounds, or textures.

  5. Delayed Developmental Milestones: Delayed milestones like walking, talking, or toilet training may also be a sign.


If you notice any of these behaviors in your child, it's important to seek a professional evaluation. Early intervention, such as ABA therapy, can significantly support your child's development.


At Inclusive ABA, we specialize in personalized ABA therapy in Nevada, Nebraska, and Colorado that helps children develop communication, social skills, and adaptive behaviors.


Learn how our ABA services can support your child’s growth. Contact us today!


SOURCE:


https://pmc.ncbi.nlm.nih.gov/articles/PMC8280472/


https://www.autism.org.uk/advice-and-guidance/topics/about-autism/repeated-movements-and-behaviour-stimming


https://www.healthline.com/health/signs-of-autism-in-4-year-old


https://www.nhs.uk/conditions/autism/signs/children/


https://www.reddit.com/r/Autism_Parenting/comments/17hmwbk/what_does_high_functioning_level_1_autism_look/

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