How do therapies accommodate autism with co-occurring conditions such as ADHD or anxiety?
Many autistic people also experience conditions such as ADHD or anxiety. According to NICE guidance, around 70% of autistic children and young people have at least one additional mental-health or neurodevelopmental condition, and clinical presentation can shift when these conditions are present. NICE also emphasises that co-existing disorders should be identified early and treated using their own specific guidelines, not as part of autism alone.
Diagnostic overshadowing, where difficulties are misattributed to autism, is a recognised risk. NHS England advises that reasonable adjustments, such as clearer communication, sensory-aware environments and longer appointments, help make therapies accessible.
How therapy is adapted for autism and anxiety
There is strong evidence that adapted CBT can reduce anxiety in autistic children and young people. Recent systematic reviews and meta-analyses show that modified CBT outperforms usual care, especially when the therapy is structured and predictable.
Common adaptations include:
- visual schedules and concrete language
- slower pacing with repetition
- explicit teaching of emotion recognition
- using personal interests to aid engagement
- involving parents or carers to support skill use between sessions
A large school-based trial also found that an adapted CBT programme delivered by trained staff led to meaningful reductions in anxiety, suggesting that autism-informed adjustments improve outcomes across settings.
Therapy considerations for autism and ADHD
When ADHD traits are present, therapy often needs additional structure. The NHS Wales practitioner toolkit and SIGN guideline highlight strategies such as:
- shorter or more frequent sessions
- breaking tasks into small, manageable steps
- written or visual reminders
- movement breaks
- minimising distractions
- explicit support for organisation and time-management skills
These autism-informed adjustments sit alongside the separate NICE ADHD guidance, which should be followed in full for diagnosis and treatment.
Medication within integrated care
NICE is clear that medication should not be used for core autism features. However, for well-defined co-existing conditions such as anxiety or depression, antidepressants or anxiolytics may be appropriate when used alongside adapted psychological therapy. A NICE surveillance review also notes that ADHD is significantly more common in autistic individuals, reinforcing the importance of integrated assessment and treatment planning.
Takeaway
Therapies can be highly effective when clinicians combine evidence-based treatment for each co-occurring condition with meaningful autism-specific adaptations. According to NICE and NHS England, personalised, accessible care ensures that autistic people with ADHD or anxiety receive support that recognises their full set of needs, not just one diagnosis.