Understanding the Early Signs of Autism Spectrum Disorder

When you notice developmental differences in your child, you may have concerns. Recognizing early signs of autism spectrum disorder (ASD) is key to getting timely support. Early intervention leads to better outcomes, and according to the Cleveland Clinic, many autism signs often appear before age 2. Camino is an ABA therapy provider in Albuquerque that focuses on personalized, compassionate care, with locally based autism spectrum therapists and parent training to support your family.

What Are the Signs of Autism Spectrum Disorder Across Different Ages

Understanding how autism presents at different stages can help caregivers recognize when a child might benefit from an evaluation. While signs can vary, early identification leads to better outcomes.

Exploring Signs of Autism in Infants

Even in infancy, some early indicators of autism may appear. These can include:

Limited eye contact or lack of response to familiar voices
Reduced social smiling or facial expressions
Not following objects visually or responding to their name by 6–9 months
Lack of gestures like pointing or waving

These signs don’t confirm autism, but noticing them early can support timely screening and intervention.

Signs of Autism in Toddlers to Watch For

By the toddler years, signs of autism may become more noticeable. You might see:

Delays in speech or limited use of gestures
Repetitive behaviors such as hand flapping or spinning objects
Preference for playing alone or lack of interest in peers
Trouble with changes in routine or a strong attachment to certain objects

At Camino, our team emphasizes early intervention between 18 months and 5 years, when ABA therapy is most effective.

Early Signs of Autism in Young Children

In preschool-aged children, signs often include:

Limited pretend play or difficulty understanding others’ feelings
Echolalia (repeating words or phrases) without functional language
Sensory sensitivities—avoiding certain sounds, textures, or lights
Intense focus on specific interests, like letters or numbers

If you notice these behaviors, especially if they interfere with learning or social interaction, it may be time to consider an evaluation with a BCBA or autism specialist.

When Do Signs of Autism Show Up?

Autism spectrum disorder (ASD) often presents in early childhood, but every child develops at their own pace. Understanding when signs typically emerge can help families recognize differences early and seek guidance.

When Can Autism Be Diagnosed in Children?

Experts say many children show signs by 18–24 months. According to the CDC, some early indicators by 12 months include not pointing to show things, and by 24 months, not using two‑word phrases. The sooner a specialist evaluates the child, the sooner an intervention plan can begin.

Can Signs of Autism Disappear Over Time?

ASD is a lifelong condition; the signs do not simply vanish. However, with early, targeted interventions, many children develop skills and adapt better to everyday life. At Camino, we emphasize early autism intervention, parent training, and small caseload BCBA-led care so children build social, communication, and daily-living skills.

Uncommon Signs of Autism To Be Aware Of

Some signs of autism may be subtle or less widely known:

Sensory issues: being upset by certain textures, tastes, or sounds
Toy or object use in unusual ways: lining up objects, focusing on parts like wheels
Regression: children who had some social or language skills may stop using them

If you notice changes (rather than just delays), it’s worth bringing these up with your pediatrician or BCBA.

Can You Have Autism Symptoms and Not Be Autistic?

Yes. Some children or adults may show traits like shyness, rigid routines, or strong interests but do not meet full criteria for ASD. Diagnosis requires a pattern of symptoms across social communication and behavior, as these may impact daily life. At Camino, our team helps families through screening, evaluation, and deciding next steps.

What Can Mimic Autism in Children?

Various conditions can appear similar to ASD and require a specialist to distinguish them. These include:

Language delays or hearing impairments
Anxiety disorders, obsessive-compulsive behaviors (OCD)
Attention-Deficit/Hyperactivity Disorder (ADHD) or learning disabilities

Professionals will consider these and may recommend a co-diagnosis. Early evaluation makes a difference.

If you notice any of the signs above in your child or yourself, it’s wise to take action now. At Camino, we offer early autism intervention, bilingual services (English/Spanish), and a team of autism spectrum therapists in Albuquerque with small caseloads who deliver center-based ABA therapy. We respect each child’s uniqueness and work closely with families to build skills and confidence.