Early Signs of Autism in Toddlers (12-24 Months): NJ Parent Guide

Understanding Early Signs: Why 12-24 Months Matters

The second year of life is a critical window for social, communication, and play development. For many children with autism, differences become noticeable between 12 and 24 months. Recognizing early signs allows families to seek support sooner, which can lead to better outcomes. In New Jersey, families have access to excellent resources like NJ Early Intervention (NJEIS) and state-mandated insurance coverage for ABA therapy. This guide walks through the most common early indicators of autism in toddlers, using a warm, person-first perspective, and explains exactly what New Jersey parents can do next.

Typical Development vs. Signs to Watch For

Every child develops at their own pace, but certain milestones are expected. By 12 months, most toddlers smile socially, babble, and respond to their name. By 18 months, they typically point, use a few words, and engage in pretend play. By 24 months, they use simple phrases and show interest in other children. A child showing signs of autism may miss several of these milestones or lose skills they once had. It is not about a single missed milestone, but a pattern of differences across social communication, behavior, and sensory processing.

Social Communication Red Flags

Lack of Joint Attention (e.g., Pointing and Showing)

Joint attention is the ability to share focus with another person on an object or event. By 12-15 months, toddlers typically point to things they want or want you to see. They may also bring objects to show you. A child later diagnosed with autism might rarely point, avoid showing things, or fail to follow your point. When they want something, they might pull your hand toward it instead of pointing or vocalizing. This difference in communication is one of the earliest and most specific signs of autism.

Limited Eye Contact and Social Smiling

Most babies enjoy eye contact and smile back at their parents. Between 12 and 24 months, a child with autism may avoid looking at people, especially when being spoken to. They might not smile back when you smile at them, or their gaze may be fleeting. Some toddlers with autism prefer to look at objects rather than faces. Do not panic if your child is shy around strangers, but consistent lack of reciprocal social interaction with familiar caregivers is worth discussing with a professional.

Language and Communication Delays

Babbling and First Words

Language development varies, but by 12 months most toddlers babble (e.g., "baba," "dada") and may say one or two words. By 18 months, many say at least six words. A child with autism may not babble at all, may stop babbling, or may only repeat sounds or words (echolalia). They might also use language unusually-for example, scripted phrases from videos-without using words to express wants or feelings.

Regression in Skills

A significant red flag is the loss of previously acquired language or social skills, especially between 12 and 24 months. For example, a child who said a few words at 15 months but stops speaking by 18 months. This regression is not typical and can happen suddenly or gradually. If you notice any loss of skills, contact your pediatrician and NJ Early Intervention immediately. Early assessment is key.

Repetitive Behaviors and Restricted Interests

Motor Stereotypies (Flapping, Rocking, Spinning)

Many toddlers with autism display repetitive body movements, such as hand-flapping, finger-flicking, rocking, or spinning. While some occasional flapping is normal in excited toddlers, consistent, intense, or stereotypic movements that interfere with play or attention should raise awareness. Also watch for repetitive play, like lining up cars or toys repeatedly, or spinning the wheels of a car instead of pretending to drive it.

Unusual Play and Fixations

A child with autism may show intense interest in a specific object (e.g., a fan, a train schedule) or focus on parts of a toy (e.g., spinning its wheels, staring at the light on a toy). They might not engage in pretend play-like feeding a doll or pretending to cook. Instead, they may repeatedly stack blocks, open and close doors, or watch the same short video clip over and over. These behaviors are not inherently bad, but in combination with social differences, they can be early signs.

Sensory Sensitivities and Atypical Responses

Over- or Under-Reactivity to Stimuli

Many toddlers with autism respond unusually to sensory input. They might be extremely sensitive to sounds (covering ears at a vacuum cleaner), touch (refusing to wear certain fabrics or be held), or lights (squinting or staring at lights). Others may seek intense input-spinning, crashing into furniture, or mouthing non-food items. They might also be less responsive to pain or temperature. These sensory differences can be subtle but often become noticeable by 18-24 months.

What to Do If You Have Concerns: NJ Resources

Talk to Your Pediatrician and Track Milestones

First, discuss your observations with your child's primary care provider. Use the CDC's Milestone Tracker app or print a checklist. If your doctor is not concerned but you still are, trust your instinct and seek a second opinion. In New Jersey, you do not need a pediatrician referral for early intervention.

NJ Early Intervention (NJEIS) - Free Evaluations

New Jersey's Early Intervention System (NJEIS) provides free developmental evaluations for children under three. You can call 1-888-653-4463 to request an evaluation without a doctor's referral. If your child qualifies, they can receive speech, occupational, behavioral, and special instruction services at home or in the community. NJEIS also coordinates with insurance and can connect you with other resources.

Insurance Coverage and Liftoff ABA's Role

New Jersey has a strong autism insurance mandate (Chapter 59) that requires most health plans to cover ABA therapy for children diagnosed with autism. NJ Medicaid (NJ FamilyCare) also covers ABA. Liftoff ABA is a provider that accepts NJ FamilyCare and most major insurance. They specialize in in-home ABA therapy designed by a BCBA and delivered one-on-one by a dedicated therapist. Most families start within weeks because Liftoff ABA has no waitlists. They also offer free insurance verification to help you understand your coverage.

No Need to Wait - Early Intervention Changes Lives

You do not need an official autism diagnosis to start early intervention-NJEIS provides services based on developmental delay. And once a diagnosis is made, ABA therapy can begin quickly. Liftoff ABA's in-home approach means therapy happens where your child already lives, learns, and plays. With no waitlists and a focus on building communication, social skills, and daily living skills, families across New Jersey can get the support they need without delay. Call (973) 566-3180 to learn more about starting services.

Liftoff ABA: In-Home, BCBA-Led Therapy with No Waitlists

Liftoff ABA stands out by providing one dedicated therapist per child, supervised by a master's-level BCBA. Therapy happens in your home across New Jersey, fitting into your family's schedule. With no waitlists, families often begin ABA within weeks. They handle the insurance process, including verification and authorization, so you can focus on your child. To learn more or request a free insurance check, reach out to Liftoff ABA today.

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