By Dr Jonathan Haverkampf. Educational information for adults; sources checked 21 October 2026.
Difficulty concentrating does not, by itself, tell you that you have ADHD. Losing your place, forgetting a task or struggling to begin can be frustrating, especially when others make it look easy. You deserve help understanding what is happening, rather than being judged for it.
ADHD is one possible explanation. Sleep difficulties, anxiety, depression, stress and other health problems can also affect attention, and more than one difficulty can be present. An assessment looks at the pattern over time and its effect on your life, rather than deciding from one example or an online checklist.
What is worth noticing?
Think about whether this is a recent change or a longstanding difficulty, where it happens, and what it makes harder. For example, are you missing important instructions, struggling with ordinary tasks or finding that work takes much longer? You can note one or two examples without keeping an exhaustive diary.
If concentration problems are persistent, worsening or interfering with everyday life, speak with a local primary care clinician or qualified mental health professional. Mention sleep, mood, physical health, medicines and substance use so that other explanations and any coexisting difficulties can be considered. Do not stop a medicine to test a theory: medication decisions need to be discussed with a qualified prescriber.
How does ADHD fit?
ADHD is a neurodevelopmental condition involving a persistent pattern of inattention and/or hyperactivity and impulsivity that affects functioning. It begins in childhood, although it may first be recognised in adulthood. Some people mainly experience problems with attention and organisation; others also experience restlessness or impulsivity.
Doing well in some situations does not settle the question. Childhood difficulties may have been missed, or support and structure may have helped someone manage them. Conversely, a new period of poor concentration does not establish ADHD. Anxiety, depression or sleep problems may coexist with ADHD, so improvement in one area does not by itself prove or disprove it. NIMH’s adult ADHD guide explains why a fuller history matters.
What happens in an assessment?
A professional with appropriate ADHD expertise considers developmental and mental health history, current difficulties across settings, and their impact. They may discuss school records or information from someone who knows you, where appropriate. Explain if records are unavailable or involving another person would be unsafe; ask how the assessment can proceed.
Questionnaires can contribute to this process, but they are not enough on their own to make a diagnosis. NICE’s assessment recommendations describe this broader approach. Referral routes, costs and who can diagnose vary by location; ask about the arrangements where you live.
A manageable step while you seek clarity
You do not need a diagnosis to try a small adjustment that makes a task easier. The NHS adult ADHD guide discusses support and changes to daily routines. These options are practical supports, not a diagnostic test or a substitute for treatment:
- Choose one task and write down its next small action. A brief written instruction may be easier to return to than holding everything in mind.
- Reduce an avoidable distraction if you can, while keeping any sensory or communication supports you need.
- Build in a break and choose a realistic stopping point. If an adjustment does not help, that is information, not a failure.
- Ask for something specific: “Could you give me the main steps in writing?” or “Could we agree which task matters first?” Availability of workplace or study support varies.
For an appointment, you might say: “I am finding it hard to concentrate, and it is affecting my day. Could we look at possible causes and what support is available?” Bring your main question and a list of medicines or supplements if you can. These appointment preparation ideas may help; preparation is optional.
When to get urgent help
Sudden confusion or disorientation needs immediate medical help. It should not be assumed to be ordinary distraction or ADHD. Call local emergency services; in Ireland call 112 or 999. NHS guidance on sudden confusion explains this distinction. If you cannot stay safe or may harm yourself or someone else, seek urgent local help rather than waiting for a routine appointment.
Related information and free support
Explore our anxiety guide, depression support guide and worldwide help routes. Older topic collections remain available for depression, anxiety, attention-deficit hyperactivity disorder, ADHD and sleep difficulties; individual older articles may need their own review.
The WHO stress guide offers free educational material in several languages. Ireland’s HSE also offers Balancing Stress, a free online programme. These are general stress resources, not ADHD assessments or ADHD treatment.
Sources and review
Source check: 21 October 2026. This page provides general education, not a diagnosis or individual treatment recommendation. The independent NIMH, NHS and NICE sources linked above support the assessment, care and safety information. Original example wording can be adapted to your circumstances.