ADHD & substance use
Impulsivity, reward timing, sleep, emotional regulation and prescribed medication can all matter; no single mechanism explains every person.
Accessibility and co-occurring needs
Neurodiversity, trauma & mental health
Substance use can intersect with attention, sensory needs, trauma, mood, sleep and cognition. Good support notices the overlap without reducing a person to a diagnosis.
TD ConsultancyPublished 5 August 2026Reviewed 5 August 2026NICE · NHS · evidence-informed practice
For individualsUnderstand patterns without self-blame
For familiesSupport without trying to control
For practitioners & servicesMake care easier to access and use
Autism & substance use
Sensory regulation, routines, social demands and masking may shape contexts of use. Autistic people are not one risk group with one treatment need.
Sensory regulation
Some people use substances to dampen overload or increase stimulation. Support can explore the function while building lower-risk alternatives.
Executive functioning
Planning, time, working memory and task initiation can make appointments, prescriptions and multi-step treatment plans harder to navigate.
Trauma & nervous-system regulation
Substances can become fast relief from hyperarousal, numbness or intrusive memories. Trauma-informed practice pairs safety with practical risk reduction.
FASD, ABI & learning disability
Information, consent, repetition, memory support and communication need adjustment to the person's actual profile, not assumptions.
Anxiety, depression & sleep
Distress can precede, follow or interact with substance use. Sleep disruption can amplify mood symptoms and decision difficulty.
Paranoia & psychosis
Stimulants, cannabis and sleep loss can contribute to psychotic experiences in some people. Severe confusion or immediate danger needs urgent help.
Shame & stigma
Stigma can reduce disclosure and help-seeking. Clear, respectful language is an accessibility intervention as well as an ethical choice.
Service accessibility
Adjust the pathway, not just the explanation
01
Reduce ambiguity
Say what will happen, how long it may take, what choices exist and what a person needs to bring.
02
Support executive functioning
Use reminders, written summaries, one-step actions and practical planning rather than interpreting missed tasks as lack of motivation.
03
Offer sensory options
Where possible, provide quieter spaces, remote contact options and predictable waiting arrangements.
04
Check understanding
Use clear language, visual support and teach-back without being patronising. Capacity and communication needs are individual.
Mental-health emergency
If someone is at immediate risk of serious harm, severely confused, having a seizure or experiencing a life-threatening medical emergency, call 999. General information on this site cannot assess an individual crisis.
Accessibility guidance for your service
Explore neurodiversity training or Designing Out Addiction service-design work.
Evidence and limits
Associations between diagnoses, traits, trauma, mental health and substance use vary across populations and individuals. A diagnosis does not explain one person’s substance use on its own, and general web information cannot diagnose a co-occurring condition.