DSM-5 ADHD in adults: what to know

The DSM-5 is a clinical guide, not a blood test or brain scan. An assessment considers symptoms such as losing track of tasks, overlooking details, struggling to organise, being easily distracted, or forgetting everyday responsibilities. It may also consider restlessness, interrupting, excessive talking, difficulty waiting, and acting before thinking.

For an adult diagnosis, the clinician checks whether the pattern was present during childhood, even if it was never recognised at the time. Symptoms should be evident in settings such as work, home, study or relationships, and should cause meaningful difficulty. Sleep problems, anxiety, depression, substance use, medication effects and other health conditions can resemble ADHD, so they also need consideration. A symptom such as difficulty concentrating can occur for many reasons; it does not by itself establish ADHD.

Write down the situations that are hardest, how long they have been happening, and the practical effects on work, study, finances, driving, home tasks or relationships. Bring examples rather than relying on a symptom checklist alone.

If possible, ask a parent, sibling or long-term partner what they remember about your childhood behaviour and current functioning. School reports, old comments from teachers and previous health records may add useful context. Arrange a consultation with a qualified clinician who can review your history and discuss whether a formal mental health assessment is appropriate.

Arrange professional care when attention, impulsivity or restlessness is repeatedly disrupting safety, employment, education, relationships or basic self-care. Seek urgent help if you have thoughts of harming yourself or someone else, feel unable to stay safe, or develop severe confusion, agitation or loss of contact with reality. These concerns need immediate support regardless of whether ADHD is eventually diagnosed.

Ask which symptoms and settings will be reviewed, how childhood history will be checked, and what other conditions or medicines could explain the same difficulties. You can also ask what support is available while the assessment is underway and how treatment choices would fit your health history.