Signs of autism spectrum disorder (ASD) often appear in infancy or early childhood, with many appearing by 12-18 months, though some children develop typically before losing skills (regression) between 18-24 months, making signs noticeable later. Early indicators involve differences in social communication (poor eye contact, not responding to name) and repetitive behaviors, though severity varies.
Some children show early signs of autism within the first 12 months of life. In others, autism signs may not show up until 24 months of age or later.
Your Child at 18 – 30 Months. Between 18 and 24 months, the symptoms of autism become apparent enough that a definitive diagnosis is possible. If your child is not meeting these milestones, you need a formal evaluation by an expert clinician.
The behavioral symptoms of autism spectrum disorder (ASD) often appear early in development. Many children show symptoms of autism by 12 months to 18 months of age or earlier. Some early signs of autism include: Problems with eye contact.
By age 2, a diagnosis by an experienced professional can be considered reliable. 1 However, many children do not receive a final diagnosis until they are much older. Screening questionnaires and checklists are based on research that compares your child with other children of the same age.
People with ASD often have problems with social communication and interaction, and restricted or repetitive behaviors or interests. People with ASD may also have different ways of learning, moving, or paying attention. It is important to note that some people without ASD might also have some of these symptoms.
The "6-second rule" for autism is a communication strategy where a speaker pauses for about six seconds after asking a question or giving information, giving the autistic person extra time to process it without feeling rushed, which helps reduce anxiety and allows for a more thoughtful response, reducing frustration for both parties. Instead of repeating or rephrasing, which can be confusing, you wait, and if needed, repeat the exact same words after the pause.
Research tells us that autism tends to run in families, and a meta-analysis of 7 twin studies claim that 60 to 90% of the risk of autism comes from your genome. If you have a child with autism, you are more likely to have another autistic child. Your other family members are also more likely to have a child with ASD.
As children develop speech, early warning signs of an ASD include scripted speech, echolalia, and using words out of context. as from a television program or movie. The child uses the phrase out of context, and it is not used in an attempt to communicate.
Around 90% of autism cases are attributed to genetic factors, meaning autism is highly heritable, with many different genes contributing, rather than a single cause, often interacting with environmental influences during early brain development, though specific environmental factors don't cause it but can increase risk. Twin studies show strong genetic links, with concordance rates between 60-90% in identical twins, and research points to complex interactions of many genes and prenatal/perinatal factors.
Signs of autism in children
There is not just one cause of ASD. Many different factors have been identified that may make a child more likely to have ASD, including environmental, biologic, and genetic factors.
Examples of this can include: following set routines and rituals – examples include eating the same meals each day, doing tasks in the same order, using the same items (such as a favourite cup or pen), taking the same route to school or work, children asking the same questions to hear the same answers (for reassurance)
Five key signs of autism (ASD) involve difficulties with social communication, repetitive behaviors, intense interests, sensory sensitivities, and strict routines, such as trouble with small talk/eye contact, hand-flapping/lining things up, deep focus on specific topics, sensitivity to sounds/lights, and distress over schedule changes, though these vary widely.
Reaching to one's own forehead in response to a marked mirror image has traditionally been conceptualized as an important, initial measure of self awareness (the mirror self recognition test, or MSR, e.g. Gallup, 1970) and it typically emerges between the ages of 18 and 24 months (Bertenthal and Fischer, 1978).
Physical Symptoms:
Main signs of autism
finding it hard to make friends or preferring to be on your own. seeming blunt, rude or not interested in others without meaning to. finding it hard to say how you feel. taking things very literally – for example, you may not understand sarcasm or phrases like "break a leg"
Seem overly fussy or be difficult to soothe. Children at risk for autism might cry or tantrum more often than other children. They might also begin to cry or fuss without an obvious trigger and/or not be soothed by common calming practices.
Understanding the 6 stages of an autism meltdown can help parents, caregivers, and educators respond with empathy and support.
A child with mild autism can ultimately lead a very “normal”, productive, and independent life. With early intervention, a child with autism can learn the skills needed for successful navigation in communication and social interaction with peers in school.
In the U.S., about 4 in 100 boys and 1 in 100 girls have autism. Boys are nearly 4 times more likely to be diagnosed with autism than girls.
Chinning is a form of repetitive self-stimulatory behavior (stimming) that you may notice in children or adults with autism. It involves pressing, rubbing, or holding the chin against objects, surfaces, or even hands to gain sensory input or comfort.
There's no single "hardest" age for autism; challenges shift across developmental stages, with preschool (2-5) often tough due to noticeable differences in social/language skills, elementary (6-10) marked by growing academic/social demands, and adolescence (11-17) frequently being overwhelming due to complex social pressures, puberty, and identity formation, say Bluebell ABA Therapy and Blossom ABA Therapy. While early childhood (ages 3-6) sees initial progress for many, this often stalls around age six, a critical turning point where increased support is crucial, according to research, notes The Transmitter.
When someone is in a state of high anxiety or flooded with sensory input the brain can become overwhelmed and demand a fight, flight, or freeze response from the body. In autistic people this can result in a meltdown (the equivalent of the 'fight' response) which is often mistaken for a temper tantrum.