Autism spectrum disorder (ASD) is a neurological and developmental condition that affects how people communicate, interact, learn, and behave. Autism is described as a spectrum because autistic people can have very different combinations of characteristics, strengths, challenges, and support needs.
Development is not a race, and autism does not look the same in every child.
Learn about key areas of development and how autism can impact each one.
A clear overview of autism spectrum disorder (ASD). including common characteristics and how autism can present differently in each child.
Learn about typical development, how autism may impact milestones, and what to watch for at different ages.
Explore how autism can impact communication and the many ways children can express themselves.
Understand sensory processing differences and practical strategies to support sensory needs at home, school, and in the community.
Learn how autism can impact social skills and how to support meaningful relationships and social growth.
Understand why big emotions happen and how to build emotional regulation skills.
Learn how behavior is a form of communicatios and what it may be trying to tell us.
Explore the unique strengths, talents, and perspectives children with autism bring to the world.
Learn about common co-occurring conditions and how they may impact development and support needs.
Practical strategies and supportive environments to help children build skills and reach their full potential.
Autism is a developmental condition. Current diagnostic criteria describe persistent differences in social communication and social interaction together with restricted or repetitive patterns of behavior, interests, or activities. These characteristics begin during the developmental period, although some may become more noticeable as social or environmental demands increase. Autism can be identified in childhood and may also be diagnosed later. Characteristics and support needs vary widely from person to person. A diagnosis describes a pattern of development; it does not define a child’s personality, potential, or worth.
Autism can present in many ways. Possible characteristics may involve social communication, play, language, repetitive movements or speech, focused interests, responses to change, and sensory experiences. A child does not need to show every possible characteristic. Possible signs can include differences in eye gaze, gestures, shared attention, conversation, or social play; repetitive movements or repeated language; highly focused interests; difficulty with changes in routine; and unusual responses to sounds, textures, light, movement, temperature, taste, or other sensory input. Some of these characteristics can also occur in people who are not autistic. Diagnosis depends on the overall developmental pattern and a professional evaluation, not one isolated behavior. Autism can be identified in childhood and may also be diagnosed later. Characteristics and support needs vary widely from person to person. A diagnosis describes a pattern of development; it does not define a child’s personality, potential, or worth.
Developmental monitoring is the ongoing process of watching how a child grows and develops. Developmental screening is a more formal process that uses standardized tools to identify children who may need further evaluation. The American Academy of Pediatrics recommends developmental and behavioral screening at 9, 18, and 30 months and autism-specific screening at 18 and 24 months. Screening does not diagnose autism. A positive screen or developmental concern may lead to a more comprehensive evaluation. Autism diagnosis is based on developmental history and observed behavior. There is no blood test or other single medical test that diagnoses autism. A comprehensive evaluation may include information about communication, cognition, adaptive functioning, behavior, development, and other areas relevant to the child When a developmental delay is identified, appropriate supports can begin while the autism diagnostic process is still underway. Families do not need to wait for a final autism diagnosis before addressing an identified developmental need.
Developmental milestones are skills that most children are expected to demonstrate by certain ages in areas such as communication, movement, learning, play, and social interaction. Milestones are useful for monitoring development, but milestone checklists are not diagnostic tests for autism. Development is best understood as a pattern over time. One missed milestone does not by itself establish a diagnosis. Parents and caregivers should discuss missed milestones, loss of previously used skills, or other developmental concerns with the child’s healthcare provider. Developmental surveillance should continue as children grow because some differences become more apparent when communication, learning, independence, or social expectations increase.
Autistic children communicate in different ways. Some use spoken language fluently, some use few or no spoken words, and others communicate through gestures, signs, pictures, writing, or augmentative and alternative communication (AAC). Communication ability should not be judged only by the number of spoken words a child uses. Communication includes expressing needs, preferences, ideas, discomfort, emotions, choices, and social connection, as well as understanding messages from other people. Repeated language, including echolalia, can be part of an autistic child’s communication profile. When communication concerns are present, speech-language evaluation can help identify receptive, expressive, social-pragmatic, speech, and AAC needs as appropriate.
Sensory differences are part of the diagnostic features that may occur in autism. A child may be more sensitive, less sensitive, or unusually interested in sensory experiences involving sound, light, touch, movement, smell, taste, temperature, pain, or other input. Sensory experiences can affect comfort, participation, learning, eating, sleep, clothing, hygiene, healthcare visits, community activities, and daily routines. Support may include reasonable changes to the environment, preparation, visual supports, additional personal space, or other individualized adjustments. A sudden or significant change in behavior should not automatically be assumed to be sensory or behavioral; pain, illness, mental-health needs, communication difficulty, and other causes may also require consideration.
Autistic social development may look different from non-autistic development. Differences can involve back-and-forth interaction, nonverbal communication, relationships, play, conversation, interpreting social information, or adjusting communication across situations. These differences do not mean that autistic children lack feelings, attachment, empathy, or interest in relationships. Social interest and preferred ways of connecting vary from person to person. Social support should focus on useful communication, participation, relationships, self-advocacy, and navigating situations that matter to the individual. The goal should not simply be to make an autistic child appear less autistic.
Emotional regulation involves managing and recovering from emotional states, often with support from other people and the environment. Autistic children may experience regulation difficulties related to communication demands, uncertainty, sensory overload, anxiety, fatigue, pain, changes in routine, or other factors. When distress occurs, it is important to consider what may be contributing to it rather than treating the visible reaction as the entire problem. Predictability, communication supports, environmental changes, coping skills, preparation, and co-regulation may be helpful depending on the child. Persistent or severe anxiety, major mood changes, self-injury, loss of functioning, or other mental-health concerns deserve appropriate professional evaluation rather than being automatically attributed to autism.
Behavior can provide information about what a child needs, experiences, understands, wants, or is trying to avoid, especially when communicating those things in another way is difficult. When behavior becomes challenging, relevant factors can include communication needs, pain or other physical conditions, anxiety or other mental-health needs, sensory and physical environments, social environments, changes in routine, developmental changes, predictability, and reinforcement. Understanding what happened before, during, and after a behavior can help identify patterns. When behavior creates significant safety or functional concerns, appropriate assessment can help determine contributing factors and guide support.
Autistic people have individual strengths, interests, preferences, personalities, and abilities. Some may demonstrate strengths in detailed learning and memory, visual or auditory learning, focused interests, creativity, mathematics, science, music, art, or other areas. Strengths differ from person to person and should not become stereotypes. A child can have substantial support needs and meaningful strengths at the same time. Good support planning considers what the child enjoys, values, does well, and wants to learn, not only areas of difficulty.
Autistic children can also have medical, developmental, behavioral, or mental-health conditions that affect daily functioning and quality of life. These can include attention-deficit/hyperactivity disorder (ADHD), anxiety, sleep problems, feeding difficulties, gastrointestinal symptoms, seizures, intellectual disability, and other conditions. Do not assume that every new difficulty is caused by autism. Changes in sleep, eating, mood, attention, pain behavior, toileting, communication, or overall functioning may warrant medical or clinical evaluation. Depending on the child’s needs, care may involve pediatricians, developmental specialists, psychologists, speech-language pathologists, occupational therapists, behavior analysts, educators, mental-health professionals, neurologists, or other professionals.
Support should be matched to the individual child rather than based only on the diagnosis. A child may need support with communication, learning, daily living, behavior, sensory needs, emotional regulation, school participation, safety, social participation, or other areas. Families should receive understandable information and have a meaningful role in decisions. Supports should consider the child’s developmental level, communication, health, environment, preferences, strengths, and family circumstances. Environmental adjustments can also matter. Visual supports, predictability, changes to noise or lighting, preparation for transitions, and other reasonable adaptations may reduce unnecessary barriers for some children.
Myth: Autism looks the same in everyone. Fact: Autism is a spectrum. Characteristics, strengths, communication, and support needs vary widely. Myth: A child who speaks well cannot be autistic. Fact: Spoken language ability does not rule out autism. Autism diagnosis considers a broader developmental pattern. Myth: Autistic children do not want relationships. Fact: Social interest and preferred ways of connecting vary. Social communication may look different without an absence of attachment or desire for connection. Myth: Poor parenting causes autism. Fact: Autism is a neurological and developmental condition. It is not caused by parenting style. Myth: Every difficulty is “just autism.” Fact: Medical, developmental, mental-health, communication, sensory, and environmental factors can also affect functioning. Myth: Autism tells you what a child’s future will be. Fact: A diagnosis cannot predict an individual child’s complete developmental path, abilities, relationships, independence, or quality of life.
No. Autism is a neurological and developmental condition. It is not caused by poor parenting.
Yes. Autistic people can differ substantially in communication, learning, sensory experiences, behavior, interests, strengths, and the amount or type of support they need.
No. Language delay can occur for many reasons. Autism diagnosis considers a broader pattern that includes social communication and restricted or repetitive behaviors, interests, or activities.
Yes. Some autistic children use fluent spoken language. Communication differences can involve conversation, social-pragmatic language, nonverbal communication, relationships, or other areas even when vocabulary and sentence structure are strong.
No. When a developmental delay or other need has been identified, appropriate intervention or support can begin while diagnostic evaluation is still underway.
Yes. Co-occurring developmental, mental-health, neurological, and medical conditions can occur and should be evaluated when concerns arise.
Discuss the concern with the child’s healthcare provider. Developmental screening, autism screening, referral to early intervention, or a more comprehensive evaluation may be appropriate depending on the concern and the child’s age.
Loss of previously acquired language, social, motor, self-care, or other skills should be discussed promptly with the child’s healthcare provider so the change can be evaluated appropriately.
Understanding autism means understanding the individual child. A diagnosis can help explain patterns of development and identify useful supports, but it does not tell you everything about who a child is or what their future will look like.
Learn the characteristics. Pay attention to the child in front of you. Communication, health, development, sensory needs, strengths, environment, support needs, and family priorities all matter.
Clinical content should be reviewed periodically as professional standards, diagnostic guidance, and evidence evolve.
With the right resources, support, and opportunities, children with autism can learn, grow, and reach their full potential.
"*" indicates required fields
