"High-functioning autism" (HFA) is a non-official term for Autism Spectrum Disorder (ASD) in individuals with average or above-average intelligence, meaning they can often speak, read, and manage daily tasks, but still face significant challenges with social interaction, communication, sensory processing, and rigid thinking, despite lacking intellectual disabilities, often leading to "masking" and internal exhaustion from trying to fit in.
High-functioning autism (HFA) is a term used to describe individuals on the autism spectrum, or those diagnosed with ASD, who have average or above-average intelligence and good verbal skills but still experience challenges related to social interaction, communication, and behavior.
Researchers coined the term 'high functioning' in two papers published in the late 1980s2 ,3. It has since become shorthand to describe people with autism who have strong language skills and do not have intellectual disability (an IQ below 70).
A: Autistic individuals typically live 16 to 20 years less than neurotypical people, with some studies estimating an average lifespan of around 54 years. However, life expectancy can vary greatly depending on support, health, and living conditions.
The different types of autism include autism spectrum disorder (ASD), autistic disorder (classic autism), Asperger's syndrome, pervasive developmental disorder not otherwise specified (PDD-NOS), childhood disintegrative disorder (CDD), and Rett syndrome.
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.
Level 3 autism is the most severe form of the disorder. Compared to levels 1 and 2, it requires a significant amount of additional outside help and support, especially in a school setting. In some cases, level 3 autistic individuals may need assistance with daily living throughout their lives.
One common expression of anger in high-functioning autism is intense emotional outbursts such as tantrums, verbal aggression, and even physical aggression. These episodes can include shouting, name-calling, hitting, slapping, or destroying objects.
Autistic individuals often experience and express love and connection in ways that can differ from neurotypical expectations. Communication for autistic people in relationships tends to be direct and literal; understanding nonverbal cues can sometimes be a challenge.
What NOT to Say to Someone with Autism
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.
Physical Symptoms:
Numerous studies have indicated that a significant proportion of individuals with autism exhibit above-average intelligence. In fact, some studies have suggested that there may be a higher prevalence of individuals with autism who fall into the gifted or high IQ range compared to the general population.
Signs of High-Functioning Autism in Children
May appear more mature for their age and have above-average intelligence. A tendency to avoid eye contact. Trouble deviating from a routine or adapting to changes. Trouble making friends and maintaining social relationships, or not “fitting in” with peers.
Top 10 Calming Strategies for Autism
For example, while non-autistic people may find gentle, rhythmic touch from others to be pleasant, stress-reducing and even erotic, this may not necessarily be the case for all autistic people. Management of atypical sensory processes within intimate relationships can be a particular challenge for some autistic people.
The three main symptom areas for Autism Spectrum Disorder (ASD) are persistent difficulties with social communication and interaction, restricted or repetitive patterns of behavior, interests, or activities, and often, different ways of learning, moving, or paying attention, all of which impact daily functioning. These core characteristics vary greatly but center on social connection challenges, rigid routines or repetitive actions, and sensory sensitivities.
The Autism Spectrum Disorder person often has no idea what he or she is feeling, and even less how you are feeling. Discussions tend to stay at a superficial level, often focused on facts, ignoring subtly and nuance, and with little regard to multiple perspectives on any given position.
Yelling at an autistic child can cause confusion, fear, and emotional distress that may last far longer than you'd expect. Because autistic kids often process language, tone, and emotions differently, loud voices can be overwhelming—sometimes even physically painful.
A notable behavioral treatment for people with ASD is called applied behavior analysis (ABA). ABA encourages desired behaviors and discourages undesired behaviors to improve a variety of skills. Progress is tracked and measured.
An autistic meltdown is an intense emotional and physical reaction to sensory or emotional overload. It is not a tantrum but an involuntary neurological response. An autistic meltdown in adults often includes crying, shouting, pacing, repetitive movements, or complete withdrawal.
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.
Summaries for Autism 7
It is characterized by a triad of limited or absent verbal communication, a lack of reciprocal social interaction or responsiveness, and restricted, stereotypic, and ritualized patterns of interests and behavior (Bailey et al., 1996; Risch et al., 1999).