by Ben Rea LCSW
If you've ever wondered whether ADHD is something you either have or don't have, you're not alone. We tend to talk about ADHD as if it is a fixed condition. You have the symptoms, you get the diagnosis, and then you spend the rest of your life managing them.
But the reality is much more complicated, and a fascinating 2024 study from the long-running Multimodal Treatment of ADHD, or MTA, study helps explain why.
The researchers followed 483 people who were diagnosed with ADHD as children and continued to assess them over approximately 16 years. By the end of the study, participants were young adults, with an average age of about 25. What they found was something many people with ADHD already know intuitively: ADHD doesn't necessarily look the same throughout your life.
ADHD Can Change Over Time
One of the most interesting findings was that about 64% of the participants experienced what researchers described as a fluctuating course of ADHD. In other words, their symptoms didn't simply remain consistently high or consistently low. They moved between periods of greater and lesser symptom severity over the years. For some people, there were periods when they met full criteria for ADHD and other periods when their symptoms decreased enough that they no longer met the diagnostic threshold. The researchers found that people in this fluctuating group experienced several changes between higher and lower symptom periods during the study.
This matters because it challenges the idea that ADHD is always a straight line. Someone can struggle significantly with attention and executive functioning at one point in life and function much better at another point.
That doesn't necessarily mean the original diagnosis was wrong. It may mean that something about the person's environment, responsibilities, development, stress level, treatment, or circumstances changed.
Sometimes the Environment Changes More Than We Realize
Think about what happens when you go from high school to college.
In high school, someone else may have provided a lot of structure. You had a relatively predictable schedule. Teachers reminded you about assignments. Your parents may have helped you get up in the morning, keep track of appointments, or remember what you needed to bring with you.
Then you go to college. Suddenly, nobody is checking whether you went to class. Nobody cares if you stay up until 3 a.m. Nobody is reminding you that the paper is due tomorrow. You have to manage your schedule, sleep, meals, studying, social life, finances, and everything else on your own. The same person who looked like they were doing fine in high school can suddenly feel completely overwhelmed.
And then something similar can happen later in adulthood. You get married. You have children. Your job becomes more demanding. You take on a leadership position. You are caring for aging parents. Your responsibilities multiply. Sometimes what looks like worsening ADHD is actually a mismatch between the demands of your current environment and the strategies that used to work.
The MTA researchers specifically looked at environmental demands such as education, employment, financial responsibility, living arrangements, and having children. These kinds of changes can influence how ADHD symptoms affect day-to-day functioning.
Symptoms and Functioning Are Not Exactly the Same Thing
This is an important distinction.
You can have ADHD traits and still function extremely well in certain environments. Maybe you work in a job that gives you constant stimulation and immediate feedback. Maybe you're naturally good at working under pressure. Maybe your partner handles the things you tend to forget. Maybe you've developed elaborate systems to keep yourself organized. From the outside, you might look incredibly successful.
Inside, you might be working twice as hard to keep everything together.
This is something I think gets missed when we talk about ADHD. We tend to look at the outcome and assume it tells us everything about the process. But being successful doesn't necessarily mean something is easy. Sometimes it means you've become very good at compensating.
"But I Can Focus When I'm Interested"
This is one of the things people with ADHD often struggle to explain.
They'll say, "If I really had ADHD, how could I spend five hours working on this project?" That's actually part of what makes ADHD so confusing.
The ability to focus is not necessarily the problem. The difficulty can be directing and sustaining attention consistently, particularly when a task is repetitive, boring, delayed in its rewards, or doesn't feel particularly meaningful. Your brain may be capable of intense focus. The problem is that you can't always decide when that focus will show up.
This can create a frustrating cycle where you know what you're capable of, but you can't reliably access it when you need it.
Why ADHD Sometimes Becomes More Noticeable in Adulthood
A lot of adults don't recognize their ADHD until much later in life.
Sometimes they were successful students. Sometimes they were told they were lazy, careless, forgetful, or simply weren't living up to their potential. Sometimes they developed enough coping strategies to get through school but found those strategies stopped working as life became more complicated.
Adult life requires a tremendous amount of executive functioning.
You have to remember appointments, pay bills, respond to emails, maintain relationships, manage your health, keep track of deadlines, plan ahead, and somehow remember where you left your keys.
And nobody gives you a syllabus.
That is why someone can feel like their ADHD suddenly appeared in adulthood when, in reality, the demands of adulthood simply exposed difficulties that were previously being compensated for.
What About Periods When ADHD Seems to Disappear?
This is another interesting part of the study.
If someone has periods when they no longer meet diagnostic criteria for ADHD, does that mean the ADHD is gone?
Maybe. But it isn't necessarily that simple.
The researchers found that ADHD symptoms fluctuated considerably for many participants. Someone who appeared to be doing well at one point could experience greater symptoms later. Someone who appeared to have persistent symptoms could also experience periods of improvement
This is why I think it's more useful to be curious about what changed rather than immediately deciding that the diagnosis was either completely right or completely wrong.
Did your environment become more structured?
Did you change jobs?
Did you develop better routines?
Are you sleeping better?
Are you exercising more?
Are you under less stress?
Are you taking medication?
Did you simply find a career that fits the way your brain works?
Those questions can tell us a lot.
There Isn't One Predictable ADHD Path
The researchers also found differences between people with persistent ADHD and those whose symptoms fluctuated or improved. The group with more persistent symptoms had greater early and continuing risk for certain mood and substance use problems, while other groups showed different patterns involving anxiety, family history, treatment, and environmental factors.
But I think the bigger takeaway is that there isn't one simple formula for predicting what someone's ADHD will look like ten or twenty years from now.
That's actually an encouraging finding.
It means your current struggles don't have to become your permanent identity.
It also means that having a period where things are going well doesn't mean you imagined the difficulties you had before.
What This Means for Someone Struggling Right Now
If you're struggling with attention, organization, procrastination, or motivation right now, it can be tempting to make it a character judgment.
"I'm lazy."
"I'm undisciplined."
"Why can't I just do what everyone else seems to be able to do?"
But what if the better question is, "What has changed?"
Maybe you're sleeping poorly. Maybe you're under more stress. Maybe your responsibilities have increased. Maybe anxiety is taking up a lot of your mental bandwidth. Maybe you're depressed. Maybe your environment isn't giving you enough structure. Maybe the strategies that worked five years ago simply aren't enough anymore.
That doesn't mean you need to lower your expectations.
It means you may need different tools.
Treatment Doesn't Have to Mean One Thing
The MTA study is particularly interesting because it grew out of one of the most comprehensive treatment studies of ADHD ever conducted. The original research looked at medication, behavioral treatment, and their combination, reflecting the reality that ADHD treatment doesn't necessarily have a single answer for everyone.
Current research continues to support an individualized approach that can include medication, behavioral interventions, environmental changes, skills training, and other forms of support depending on the person and their circumstances.
In therapy, I think this means we have to look at more than the symptom checklist.
If someone is having trouble focusing, I want to understand what else is happening. How are they sleeping? What kind of stress are they under? What are the demands of their environment? Are they overwhelmed? Are they avoiding something because it feels too difficult to start? Is anxiety interfering with attention? Are their relationships adding stress or providing support?
And perhaps most importantly, what kind of life are they trying to build?
The Goal Isn't to Become a Different Person
I think we sometimes get so focused on fixing ADHD that we forget the person who is living with it.
Maybe you will always need reminders.
Maybe you'll always work better when you're interested in something.
Maybe you'll need a calendar, alarms, lists, routines, or other systems to keep your life moving.
That's okay.
Needing tools doesn't mean you're failing.
Most of us use tools for things that matter to us. We wear glasses when we need help seeing. We use GPS when we don't know where we're going. We use calendars because we can't reasonably remember every appointment and deadline in our lives.
The goal isn't to eliminate every difference in how your brain works.
It's to understand your brain well enough to build a life that works with it rather than constantly fighting against it.
ADHD Is More Complicated Than a Checklist
The 2024 MTA findings give us a more nuanced way of thinking about ADHD. For many people, symptoms fluctuate over time. The way ADHD affects someone's life can change as their environment, responsibilities, relationships, health, and support systems change.
That doesn't mean ADHD isn't real.
It means ADHD is human.
And human beings are not static.
If you're struggling today, that doesn't tell us exactly what your life will look like five years from now. It tells us that something deserves attention right now.
Maybe you need better strategies.
Maybe you need more structure.
Maybe you need to address anxiety or stress.
Maybe you need to revisit your ADHD treatment.
Or maybe you need to stop interpreting a neurological difference as a personal failure.
Sometimes the most useful question isn't "How do I force myself to be more disciplined?"
It's "What would make it easier for me to function well in the life I'm actually living?"
That's a much more productive place to begin.
ADHD Therapy in San Luis Obispo
I work with adults, college students, and young adults who are trying to understand attention, motivation, procrastination, executive functioning, anxiety, and the ways these things affect school, work, relationships, and everyday life.
Therapy isn't about lowering the bar or finding an excuse for difficult behavior. It's about understanding what's getting in the way so you can make meaningful changes without spending your life beating yourself up.
You don't have to become someone else to function better.
Sometimes the work is learning how your brain works, understanding what changed, and building the structure and strategies that allow you to use your strengths more consistently.
As always, I’m here to help.
Ben
