ADHD is a neurodevelopmental condition, which means certain changes in the brain. As a rule, these neurological changes can be noticed in childhood through behavior, habits, and development. But sometimes ADHD traits may be overlooked or develop later in life. Does it mean it’s not ADHD anymore if it’s not detected in childhood?
The fact that adults can’t have ADHD is a myth that was debunked long ago. Besides having various symptoms (hyperactive-impulsive, inattentive, combined), ADHD in adults also shows up differently because adults learn to mask their symptoms to “fit into society.”
Some people and even mental health specialists can neglect adults with ADHD. Hence, it’s essential that you are educated to advocate for your right to a correct diagnosis. This guide will explain to you how to get diagnosed with ADHD in just 5 steps.
5 Steps to Get Diagnosed with ADHD Even as an Adult
Getting diagnosed with ADHD in adulthood will rarely be a single test. Half of ADHD in adults is underdiagnosed for a reason [1]. If you are a person of color, a woman, or an immigrant, it’ll be even harder to get the right diagnosis for you.
Adults who want to get diagnosed with ADHD have to go through the process of clarification, a process of preparation, collecting notes and knowledge, and learning their rights. These steps are designed to break down the process of clarification into informed actions, even if you’ve never been taken seriously before or don’t fit the stereotypical image of ADHD.
Step 1: Complete an Online Assessment of ADHD Symptoms in Adults
No matter why you suspect you might have ADHD, educational online evaluations are your go-to first touchpoints. They help with psychoeducation and self-exploration, especially if you’re new to mental health topics.
However, be careful as there are numerous scammers and unreliable evaluations online. We recommend a proven option, ADHD Test Breeze for a few reasons:
- Based on the evidence-based self-reporting scale, the Adult ADHD Self-Reporting Scale (ASRS).
- More than five thousand completions.
- Positive feedback from users.
- Developed by a qualified mental health professional.
- Includes personalized recommendations and plans.
- It’s suitable for women, neurodivergents, immigrants, etc.
Important: online assessments are not diagnostic tools, but they can help to put certain experiences that feel personal into language.
These tests are also practical preparation. They give you concrete examples to share with a doctor, reduce the fear of “not being taken seriously,” and help you decide whether pursuing a formal evaluation makes sense.
Step 2: Learn About ADHD Symptoms from the DSM-5
The DSM-5 is a diagnostic manual with criteria for various mental health and neurodevelopmental conditions. Its criteria are regularly updated to include new research and rising trends in populations. Although the DSM-5’s diagnostic criteria are regularly criticized for being exclusive and obsolete, it’s still the most widely used.
The DSM-5 outlines ADHD symptoms in three types. We’ll provide examples; the full diagnostic criteria can be found here [2]:
- Inattentive
- Struggles to follow instructions.
- Frequently loses personal belongings.
- Makes careless mistakes.
- Daydreams and does not follow conversations.
- Distracted by external stimuli (sounds, movements, smells).
- Is messy and/or disorganized.
- Hyperactive-impulsive
- Fidgets.
- Cannot sit calmly or straight.
- Feels restless like they need to go somewhere, do something to scratch that inner itch.
- Talks excessively.
- Has trouble waiting for turns or in lines.
- Interrupts others.
- Combined
- Both inattentive and hyperactive-impulsive symptoms combined.
DSM-5 also has additional criteria to get diagnosed with ADHD:
- Some symptoms should have been presented before the age of 12.
- Symptoms should be present in at least two settings (work, hobby, relationships, etc.)
- Symptoms should interfere with quality of life.
- Symptoms cannot be explained by other mental health conditions.
Step 3: Contact Your Family Doctor
Contacting your primary care doctor can feel intimidating, especially if you worry your concerns won’t be taken seriously, but preparation makes a big difference.
When you reach out, focus on impact. Describe how symptoms affect your daily life: missed deadlines, chronic disorganization, emotional overload, or burnout despite effort. Bring notes from your self-assessment, examples from work or relationships, testimonies from your relatives, and childhood indicators.
Your doctor may conduct an initial screening, rule out medical causes, and refer you to a specialist such as a psychiatrist, psychologist, or neurologist. If your concerns are dismissed, it’s okay to advocate for yourself or seek a second opinion. Refer to ADHD advocacy organizations, such as CHADD, ADHD Europe, and the Society for ADHD, to get support and instructions on how to advocate for yourself.
Step 4: Prepare for the ADHD Evaluation
Before your appointment, take detailed notes. Since ADHD in adults can look like forgetfulness, we recommend noting down this information:
- Concrete examples of how symptoms show up in your life. Think about difficulties with attention, time management, emotional regulation, organization, or follow-through, both now and earlier in life.
- Results from your online evaluations (if you want).
- Testimonies of your teachers, parents, partner, children, and employers (although some ADHD specialists want to speak with them personally).
If you want to prepare extra, go through the DSM-5 once again. If you need a more concrete example of how ADHD shows up in adults, we recommend reading /ADHD thread on Reddit, where people share their unique ADHD signs.
Equally important is preparing emotionally. An evaluation is not a test you pass or fail. It’s a process meant to understand how your brain works. Try to let go of the urge to “perform well” or downplay difficulties. Honesty gives clinicians the information they need to help you.
Step 5: Complete the Evaluation With a Trained Professional
During the evaluation, a trained professional will usually combine clinical interviews, standardized questionnaires, and a review of your personal, medical, and developmental history. You may be asked about attention, impulsivity, emotional patterns, sleep, stress, and daily functioning. Some evaluations include cognitive tasks or rating scales to assess executive functioning.
Don’t forget that the meeting for ADHD evaluation is not just for you to be diagnosed. This is also your space to ask questions. You can clarify what the clinician is assessing, how conclusions are drawn, and what next steps might look like.
Be prepared not to receive a diagnosis straightaway. Most likely, you’ll need to wait a day or two or come in for the second appointment. Some specialists may want you to take extra labs or tests or an opinion from other specialists. Go with the instructions of your mental health specialist.
What to Expect After the ADHD Evaluation
After the ADHD evaluation, it’s common to feel a mix of relief, uncertainty, or impatience while waiting for results. All of these feelings are valid. Hence, plan relaxing or self-care activities post-evaluation. If you feel like it, discuss the evaluation with your close circle.
It’s also important that clinicians provide guidance on how to support yourself while waiting for results. Recommendations usually concern sleep routines, reducing overwhelm, or experimenting with basic structure and reminders. You can also ask for recommendations yourself.
There are a few possible outcomes that await you after an ADHD evaluation:
- If you are diagnosed with ADHD, your provider will usually discuss treatment options. These may include medication, behavioral strategies, coaching, therapy, or a combination of approaches.
- If you are not diagnosed, that doesn’t mean your struggles aren’t real. Sometimes symptoms of ADHD in adults may overlap with anxiety, depression, trauma, burnout, or other neurodevelopmental conditions. Ask your mental health specialist for the next steps and in which directions you can move.
- If the specialist is unsure, additional assessments or follow-up sessions may be recommended. ADHD evaluations are nuanced, especially in adults, and it’s normal for a diagnostic process to take more than one session.
Importance of ADHD Diagnosis for Adults
Receiving an ADHD diagnosis in adulthood can be life-changing. Many adults cry from happiness after getting diagnosed because they finally get an explanation for feeling like an alien and having a reason for their struggles. A diagnosis replaces self-criticism with understanding and context.
An accurate diagnosis opens access to appropriate support, including evidence-based treatments, workplace accommodations, and practical strategies designed to meet the needs of ADHD brains. It also helps distinguish ADHD from conditions with overlapping symptoms, such as anxiety, depression, or trauma, reducing the risk of ineffective or harmful interventions.
Here are some statistics and facts that show why it is so important to get accurately diagnosed with ADHD as an adult:
- Adults with diagnosed ADHD are 20% more productive than their peers with undiagnosed symptoms [3].
- Self-esteem and self-worth increase by almost three times in diagnosed vs. undiagnosed adults with ADHD [4].
- ADHD treatment decreases suicidality by 17%, according to the British Medical Journal (BMJ).
- Adults with an ADHD diagnosis vs. those who have ADHD but are not diagnosed have a higher quality of life: better jobs, healthier lifestyles, and better emotional regulation [5].
Many of these facts are true because diagnosis supports self-compassion. It validates that difficulties were not due to laziness. The information about your mental and neurological state allows us to set realistic expectations, build healthier routines, and advocate for your needs.
Sources (Accessed January 2026):
- Prevalence of attention-deficit hyperactivity disorder (ADHD): systematic review and meta-analysis. Cambridge University Press. October 2024.
- DSM-IV to DSM-5 Attention-Deficit/Hyperactivity Disorder Comparison. National Center for Biotechnology Information. 2025.
- How do undiagnosed but symptomatic adults compare with those diagnosed with ADHD? The American Professional Society of ADHD and Related Disorders. August 2019.
- Comparison of Quality of Life, Productivity, Functioning and Self-Esteem in Adults Diagnosed With ADHD and With Symptomatic ADHD. Journal of Attention Disorders. January 2020.
- Silver linings of ADHD: a thematic analysis of adults’ positive experiences with living with ADHD. British Medical Journal (BMJ) Open. October 2023.
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