Key Takeaways
- While it’s often recognized in childhood, many people don’t receive an ADHD diagnosis until later in life. This might be due to how their symptoms evolve over time, a person’s ability to mask their challenges, or limited awareness.
- Trouble concentrating, restlessness, memory problems, and chronic procrastination are some of the most common signs of untreated ADHD in adults. For some people, untreated ADHD can contribute to challenges in work, relationships, and overall quality of life.
- Fortunately, with the right support, adults with ADHD can manage their symptoms and lean into their unique strengths. This may include therapy, self-management strategies, and medication (if needed).
Many people think of attention-deficit hyperactivity disorder (ADHD) as a childhood condition. Thanks to increased awareness, most people are diagnosed with ADHD by about age 6. This is because signs and symptoms are usually apparent by the time a child reaches school age. However, it’s possible for a person not to be evaluated for ADHD until much later in life. For these people, living with untreated ADHD may involve some challenges. But people with ADHD also tend to have unique strengths.
ADHD is a very common neurodevelopmental condition. Research suggests that it affects about more than 15 million adults in the U.S. — about half of whom received their diagnosis in adulthood. At the same time, experts say that the majority of adults with ADHD (75%) don’t even know they have it. Learning more about untreated ADHD in adults can increase your self-awareness and help you know when it might be time to ask for help.
Signs of untreated ADHD in adults
There are three types of ADHD that a person can experience. First, there’s the inattentive type, which can involve problems with focus and concentration. There’s also the hyperactive type, which can lead to impulsivity and difficulty with self-regulation. And then there’s the combined type, which includes both inattentive and hyperactive symptoms.
These three categories can help mental health professionals know which forms of support a person may need. But keep in mind that ADHD symptoms don’t necessarily look the same throughout life.
Symptoms of ADHD in adults may include:
- Difficulty falling or staying asleep
- Trouble paying attention
- Being easily distracted
- Chronic disorganization
- Frequent procrastination
- Trouble with time management and planning
- Memory problems
- Losing things or being forgetful
- Talking too much in inappropriate settings
- Frequently interrupting others
- Difficulty organizing, prioritizing, or following through on complex or multi-step tasks
- Frequently feeling restless and having trouble sitting still for long periods
- A constant need for movement or stimulation
- Frequent impulsivity, or choosing instant gratification despite future consequences
Over time, these ADHD symptoms can evolve and become harder to detect. For example, hyperactivity tends to fade as a person gets older. And, while inattentiveness may persist, many adults learn compensatory strategies, like masking. Masking is when a person finds ways to conceal their symptoms, often by mirroring the behavior of others who don’t have ADHD (also referred to as neurotypical people). Unlike coping skills that can help you manage your ADHD, masking may lead to stress and burnout and can even delay diagnosis.
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Long-term consequences of untreated ADHD
Like other conditions, ADHD can range in severity and affect people in different ways. People with mild presentations may not experience the same long-term consequences as those with more severe symptoms.
However, for some people, untreated ADHD is known to increase the risk of:
- Co-occurring mental health conditions, like anxiety or depression
- Unhealthy substance use
- Work problems
- Relationship challenges
- Reduced quality of life
- Premature death from accidents
- Accidents due to unsafe driving
- Suicide*
*A note on safety: If you’re having thoughts of harming yourself, don’t hesitate to ask for help. You can contact the National Suicide and Crisis Lifeline by dialing 988 from any phone. The counselors there will provide confidential support and resources to help keep you safe.
Navigating ADHD treatment as an adult
Navigating ADHD treatment as an adult can bring up a range of questions and emotions. You may experience grief or anger, wondering what life might have been like if you’d been diagnosed and received support when you were younger. You might fear the effects of stigma or worry about what others might think if you ask for help or share your diagnosis. Just know that no matter what you’re feeling, your emotions are valid and you deserve support.
The first step in accessing ADHD treatment as an adult is to get an evaluation from a mental health professional or medical provider. This multi-step process will consider your age, symptoms, history, and other factors. You may also need a medical exam to rule out other health conditions.
Once you receive a diagnosis, you and your treatment team can explore options like therapy, medication, and self-management to help improve your functioning and quality of life. But remember that ADHD treatment isn’t about “fixing” something that’s wrong. It’s about learning to embrace your strengths and accessing the supports and accommodations you need to thrive.
Many adults feel a deep sense of relief and self-understanding after an ADHD diagnosis — it’s like the puzzle pieces finally fit. With that clarity often comes increased self-compassion, renewed confidence, and a fresh sense of motivation to work with their brain instead of against it.
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Although ADHD is frequently identified in childhood, many people don’t receive a diagnosis until later in life. Experts believe that as many as 75% of adults with ADHD don’t know they have it. Living with untreated ADHD can lead to issues like sleep problems, co-occurring mental health conditions, relationship issues, and more. But, with the right support, you can learn to overcome your challenges, manage your symptoms, and live a full, balanced life with ADHD.
At Rula, we’re committed to delivering a comprehensive behavioral health experience that helps people feel seen and understood so they can get back to feeling their best.
Rula makes it easier to find a licensed therapist or psychiatric provider who accepts your insurance so you don’t have to choose between affordable care and excellent care. With a diverse network of more than 15,000 providers, 24/7 crisis support, and appointments available as soon as tomorrow, we’re here to help you make progress — wherever you are on your mental health journey.
About the author
Liz Talago
Liz Talago, M.ed. is a mental health professional turned content writer and strategist based in the Detroit metro area. As an independent consultant for mental health organizations, Liz creates meaningful connections between brands and their audiences through strategic storytelling. Liz is known for championing diverse perspectives within the mental health industry and translating bold ideas into inspiring, affirming digital experiences.
In her free time, you can find her hiking with her two German Shepherds, puttering around her dahlia garden, or spending time with her family.
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