# 7 Discreet Signs of Undiagnosed Autism in Adults

> Psychologist Lisa Williams reveals 7 subtle signs adults with undiagnosed autism often show.
- Title: 7 Discreet Signs of Undiagnosed Autism in Adults | Shortify
- Summary: Psychologist Lisa Williams reveals 7 subtle signs adults with undiagnosed autism often show. Adults with undiagnosed autism may experience isolation and…
- Keywords: autism, adult, diagnosis, signs, psychologist, lisa williams, the autism service, psychology today, Discreet, Undiagnosed, Adults, Psychologies
- Source: Psychologies — https://psychologies.com/moi/problemes-psy/Autisme-chez-ladulte-la-psychologue-Lisa-Williams-revele-les-7-signes-discrets-qui-permettent-de-reperer-un-trouble-non-diagnostique-611018
- Author: Louise Leboyer
- Published: 2026-10-01T19:04:04+00:00
- Read time: 1 min
- Topics: autism, adult, diagnosis, signs, psychologist, lisa williams, the autism service, psychology today
## Why Adults Often Go Undiagnosed
Adults with undiagnosed autism face challenges because symptoms are not obvious, professional support was lacking, and knowledge about autism was limited.
## The 'Lost Generation' Problem
Many adults experience delayed diagnosis or never receive one, leading to a group called the 'lost generation' who live with autism without awareness.
## Lisa Williams' 7 Signs
Psychologist Lisa Williams lists seven common signs of autism in adults: dependency on structure, specific interests, heightened sensory sensitivities, difficulty with change, social rule challenges, relationship difficulties, and work integration issues.
## Dependency on Structure
Adults with undiagnosed autism often rely on routine, maintain daily habits, and feel unstable when plans change unexpectedly.
## Sensory Sensitivities
Heightened sensitivity to light, sound, smells, and textures is common among adults with undiagnosed autism.
## Social Rule Challenges
Adults with undiagnosed autism struggle with eye contact, casual conversations, personal space, body language, and understanding subtle humor.
## Key takeaway

Adults with undiagnosed autism may experience isolation and trauma, but early identification through these signs can improve their self-perception and daily life.