What should you know about high functioning autism and ADHD in adults?

High functioning is not a formal diagnosis and can hide the effort involved in coping. ADHD commonly affects attention regulation, impulse control, activity level and organisation. Autism may involve differences in social communication, sensory processing, preference for predictability and focused interests. An adult can have both, so difficulty concentrating, irritability or feeling anxious may arise from different mechanisms. For example, an unexpected change may be distressing because it disrupts predictability, while an unstructured task may be difficult because attention and planning are harder to direct. Looking at patterns across childhood, relationships, work, sensory experiences and routines is more useful than judging one isolated trait.

Keep a brief record of situations that cause overload, distraction, shutdown, impulsive decisions or recovery time. Include what helped, such as written instructions, quiet space, advance notice of changes or external reminders. Ask a clinician about an assessment that considers both autism and ADHD rather than assuming one explains everything. Sleep problems, anxiety, depression, trauma and physical conditions can overlap with these experiences and should be reviewed. Support can be tailored to needs: predictable routines may help autistic traits, while visual task systems and shorter work periods may help ADHD-related difficulties.

Seek professional help when masking, sensory overload, executive difficulties or social strain are causing burnout, missed essential tasks, unsafe decisions or withdrawal from daily life. Get urgent support for thoughts of self-harm, inability to remain safe or severe loss of functioning. Sudden new confusion or a rapid behaviour change warrants prompt medical assessment rather than an assumption about neurodevelopment.

Could both autism and ADHD be relevant to my history? What childhood examples or reports would help? How will anxiety, sleep and mood be separated from neurodevelopmental traits? Which accommodations can I use now?