Understanding Autism Spectrum Disorder
Understanding Autism Spectrum Disorder (ASD) is sometimes difficult for parents and caregivers. According to the NIMH, ASD is “a neurological and developmental disorder that affects how people interact with others, communicate, learn, and behave. Although autism can be diagnosed at any age, it is described as a ‘developmental disorder’ because symptoms generally appear in the first two years of life.” Put more simply, Autism Spectrum Disorder is a developmental condition that affects how children communicate, interact socially, and respond to the world around them. Parents often begin searching online with questions like “What are the signs of autism?” or “When to seek an autism evaluation?”—especially when they notice differences in their child’s development.
This series of articles discusses all the questions that most of our parents and caregivers ask about Autism Spectrum Disorder, and what they can do to help their child.
Why is ASD Called a Spectrum Disorder?
Autism is called a spectrum disorder because no two children experience it the same way. While one child may be highly verbal but struggle socially, another may experience developmental delays with speech, daily living skills, and social engagement. Recognizing these differences early is critical for supporting your child’s growth and accessing appropriate therapies. The NIMH also has a wonderful Autism Spectrum Disorder PDF with more details and explanations for your children and adolescents with autism.
Social and Communication Deficits
One of the earliest indicators parents notice is social communication challenges. A child with autism may show a lack of eye contact, appear withdrawn, or seem uninterested in engaging with others. Parents often describe that their child doesn’t engage with other children at preschool or avoids back-and-forth play.
Other problems with social skills can include:
- Difficulty understanding facial expressions or tone of voice
- Trouble starting or maintaining conversations
- Struggles with forming friendships, even if they want to connect
These communication
differences can make everyday interactions more challenging, but with early recognition and support, children can build stronger communication skills.

Repetitive Behaviors and Routines
Children with autism often show repetitive behaviors or an intense need for structure. As explained in the NIMH PDF (pictured here), parents may notice their child rocking in place, flapping hands, or choosing to line up toys instead of playing with them in traditional ways.
Unusual routines are also common. A child may insist on eating the same foods daily, wearing the same clothing, or becoming distressed if household routines change. While routines can help children feel secure, extreme rigidity may be a sign of autism.
Developmental Regression
When trying to understand Autism Spectrum Disorder, another important sign parents search for is developmental regression—when a child loses skills they once had. For example:
- A child may experience a loss of speech after beginning to talk
- They may suddenly stop using language they previously used to communicate
- Some may stop playing social games like peek-a-boo or pat-a-cake after once enjoying them
Developmental regression is one of the strongest reasons to seek an autism evaluation, as it signals the need for timely intervention.
Sensory Sensitivities
Many children with autism have unusual reactions to sensory input. Parents often notice their child covering their ears at ordinary sounds, reacting strongly to textures in food or clothing, or showing sensitivity to light. Sensitivities can involve hyper or hypo-sensitivity. According to the National Autistic Society, “Some people have a mixed and/or varying sensory experience, including both hyper-sensitivity (more sensitivity) and hypo-sensitivity (less sensitivity). This can mean you have different levels of sensitivity in different senses, or even to different inputs within the same sense. Your sensitivity may vary over time, in different environments or due to other factors, such as your mental and physical health.”
Common sensory signs include:
- Extreme picky eating due to food textures or smells
- Overreacting to bright lights or loud noises
- Distress from certain fabrics or physical touch
These sensitivities can make school, social settings, and even daily routines overwhelming, but occupational therapy and sensory strategies can help children adapt.
Specific Symptoms Parents Report
In addition to the core signs above, many parents describe specific symptoms that raise concerns:
- Hyperactivity or difficulty staying focused
- Fixations on objects or intense interest in specific topics
- Use of literal language, making it difficult to understand jokes or sarcasm
- Echolalia, or repeating words and phrases without clear meaning
While these behaviors can appear in other developmental conditions, when combined with social and communication challenges, they may point toward autism.
Concerned About Autism Diagnosis?
If you’ve found yourself searching online for “signs of autism” or “Does my child have autism?”, it may be time to consider professional testing. An early autism diagnosis allows families to access therapies such as speech therapy, occupational therapy, and behavioral support—helping children reach their fullest potential.
At The Life Change Group, we provide comprehensive autism testing for children that includes:
- A detailed clinical interview
- Sensory information diagnostics
- Multiple parent and teacher reports
- Standardized testing using the ADOS-2 and/or the MIGDAS-2, widely considered the gold standards for autism diagnosis
Final Takeaway for Parents
Every child with autism is unique, but common early signs include:
- Lack of eye contact or avoiding peer interaction
- Repetitive behaviors like rocking or flapping hands
- Loss of speech or regression in social play
- Unusual reactions to sounds, lights, or textures
- Fixations, echolalia, or literal language use
If these behaviors sound familiar, don’t wait—early autism testing provides clarity, direction, and the opportunity to access life-changing support. At The Life Change Group, we’re here to help you understand your child’s strengths and challenges so you can take the next steps with confidence.