Autism diagnosed in adulthood

December, wedding season, and Tahiya, 30, a software tester at a firm in Mohakhali, is at her cousin’s reception in a community centre in Uttara. The band is loud, the lights flash, and three aunts ask her the same question about marriage in slightly different words. She has rehearsed answers. She has also brought earplugs, which sit under her hijab, and a book in her bag for the ride home.

At work she is the one who finds the bug no one else sees. She also once answered her boss’s “Can you take a look when you get a chance?” by saying she would get a chance on Thursday, which he still tells at team lunches. Tahiya laughs too; she has learned that laughing is the right reply. At the reception her Chhoto Mama says, “Tahiya, eat something, na, you look like you’re attending a meeting.” She is, in a way. At home afterwards she lies in the dark with the fan on for an hour, too tired to speak. She has read about autistic adults online, recognised herself in every line, and does not know if she is allowed to.

An illustration drawn from common experience. The person is invented; the pattern is not.

Understanding autism in adults

Autism is a neurodevelopmental condition, present from childhood. WHO describes some degree of difficulty with social interaction and communication, atypical patterns of activities and behaviours, difficulty moving from one activity to another, a focus on details, and unusual reactions to sensations. Abilities and needs vary widely and can change over time. WHO notes that characteristics may be detectable in early childhood, but autism is often not diagnosed until much later. Autistic people often have co-occurring conditions, including anxiety, depression, ADHD and epilepsy. Autism is a different way of being, not a failure of effort, and understanding it can change how a person sees the past.

How common it is

WHO estimates that in 2021 about 1 in 127 people worldwide were autistic, and notes that reported figures vary widely across studies and that prevalence in many low and middle-income countries is unknown. Adult figures for Bangladesh are not available.

Signs worth noticing

• Social conversation feeling like hard work, with exhaustion after gatherings
• A strong need for routine, and distress when plans change suddenly
• Sensitivity to noise, light, crowds, textures or smells
• Deep, focused interests and close attention to detail
• Taking words literally, or missing hints others seem to catch
• A lifelong sense of being different, often with anxiety or low mood

How care helps

Assessment in adulthood is done by an experienced clinician, with a detailed history of childhood and present life. UK national guidelines (NICE) advise assessing at the same time for other conditions, such as depression, anxiety, social anxiety, OCD, epilepsy and sensory sensitivities, and advise against routine blood, genetic or brain scan tests for diagnosis. The same guidelines advise against antipsychotic medicines, and against routine use of antidepressants, for the core features of autism in adults; medicines are used for co-occurring conditions where guidelines support them. Support focuses on understanding, practical adjustments at work and home, and help with anxiety or low mood. A review of 26 studies of people diagnosed in adulthood found that diagnosis could bring understanding, acceptance and community, while stigma and gaps in support often remained.

What getting better can look like

Tahiya might start by telling her team lead that she works best with written instructions, and leaving the next wedding after the food, earplugs in, without guilt.

Common questions about autism in adults

Can you be diagnosed with autism as an adult?

Yes. Autism is present from childhood, but WHO notes that it is often not diagnosed until much later. Adults can be assessed by an experienced clinician through a detailed history, and other conditions such as anxiety or depression are checked at the same time.

Is there medicine for autism?

UK national guidelines advise against antipsychotic medicines, and against routine use of antidepressants, for the core features of autism in adults. Medicines may help co-occurring conditions such as anxiety or depression, and are judged case by case with a doctor.

When to see a psychiatrist

If you have long felt out of step and wonder whether autism explains it, an assessment can help, and so can care for the exhaustion, anxiety or low mood that often come with it. If you feel hopeless or unsafe, call 999.

Care here is personal: built around your history, your health and what you want to change, and reviewed with you as it goes.

Sources

• WHO fact sheet, Autism (accessed 3 November 2026)
• NICE guideline CG142, Autism spectrum disorder in adults: diagnosis and management (last reviewed 23 July 2026)
• Nayyar et al., Autism in Adulthood, 2025 (PMID 40151652)