You find an explanation for the distractions, unfinished projects, and complicated relationship with time. ADHD makes sense. But other questions remain: why does a change of plans upset you so much, why are certain sounds exhausting, or why do familiar social situations require so much preparation? An explanation can be useful and still leave something out.

AuDHD is a community term for being autistic and having ADHD. The word brings two experiences into the same conversation; it is not a new name for ADHD or a separate formal diagnosis. Autism and ADHD remain distinct conditions that can occur together. [2]

Similar on the outside can mean different things

Consider a conversation you keep interrupting. Perhaps you are worried the thought will disappear before your turn, or you are having difficulty judging when to speak. The visible behavior looks similar, but the difficulty underneath may differ. Assessment needs that detail instead of simply counting the same behavior twice. [2]

In everyday life, that means asking what made a situation hard. Did you lose the next step, miss an unspoken expectation, struggle with background sound, or encounter several problems at once? An answer such as “I need the instructions written down and a quieter place to read them” gives you something practical to work with.

Why adults can be recognized late

Before DSM-5 appeared in 2013, DSM rules excluded diagnosing ADHD alongside autism. That matters for adults whose earlier evaluations considered only one condition. An existing diagnosis can also become the explanation for every difficulty, leaving other possibilities unexplored. [1,2]

Years of workarounds can complicate the picture too. Someone may manage appointments with elaborate reminders or rehearse conversations before making a call. Those supports are part of the story: describe what you manage, the help you use, and how much effort it takes.

What a useful assessment looks at

Adult autism assessment explores communication, sensory experiences, patterns of behavior and interests, and developmental history. It can include information from someone who knew you earlier in life. Current difficulties also need context, including other conditions that may overlap or contribute. [3]

Ask whether the clinician has experience with both autism and ADHD in adults. Bring concrete examples and any relevant records you already have; describe gaps in your history rather than trying to fill them with guesses. The aim is an explanation that leads to useful support.

Next Steps

Use the separate Before an Autism and ADHD Assessment tool to organize what you want to ask. You can arrange an appointment before completing the notes; having every answer is not the price of getting help.

Sources

[1] Neff, M. A. (2026). When Autism and ADHD Travel Together. Psychology Today.
https://www.psychologytoday.com/us/blog/the-neurodivergent-psychologist/202603/what-is-audhd-when-autism-and-adhd-travel-together [2] Young et al. (2020). Guidance for identification and treatment of individuals with ADHD and ASD based upon expert consensus. BMC Medicine.
https://doi.org/10.1186/s12916-020-01585-y [3] National Institute of Mental Health. Autism Spectrum Disorder.
https://www.nimh.nih.gov/health/publications/autism-spectrum-disorder