Attention deficit hyperactivity disorder (ADHD) is often thought of as a childhood condition, but plenty of adults have it without knowing. It can go unnoticed for years, hidden behind coping strategies and routines. Then a structured setting like work makes certain things harder to ignore, and frustrating. If you’ve ever wondered whether you might have ADHD, especially after a rough patch at work, the signs below are a good place to start.
Neurodiversity, which includes ADHD, describes the natural variation in human brain function and behaviour. Everyone has strengths and weaknesses, but neurodivergent people may process information or handle tasks differently from the neurotypical population. If you’re finding certain areas harder, especially at work, these could be signs of undiagnosed ADHD. Many people only make this connection as adults, a moment we explore in our article on adult neurodivergent diagnosis.
Common signs of undiagnosed ADHD in adults
1. Timekeeping feels harder than it should
Time management can be one of the biggest challenges for adults with undiagnosed ADHD. You might find yourself consistently late, not because you don’t care but because your perception of time can be different from other people’s. If being on time takes a huge amount of effort, like setting multiple alarms, using timers or rushing at the last minute, you may burn out before the workday has even begun.
You might feel anxious about being late, even though you try to leave the house early or plan ahead. This can create a cycle of stress, where your day feels like it’s starting on the back foot. Everyone runs late sometimes. If it’s a constant in your life, ADHD could be part of it. Our guide to how ADHD affects time perception has practical tips for managing it.
2. Overworking and taking on extra tasks
Many adults with ADHD have a head full of ideas. That’s useful at work, but it often leads to taking on more tasks than you can reasonably handle. You may find yourself offering to solve problems or stepping into roles beyond your remit because your brain is always racing to come up with solutions.
Your intentions are good, but it’s a fast route to burnout. Many undiagnosed adults feel they must work harder than their peers to keep up, often juggling several projects at once. Over time, this tendency to take on too much can lead to exhaustion and stress, a pattern we look at in the ADHD burnout cycle.
3. Difficulty prioritising tasks
A classic ADHD trait is difficulty with executive function, the brain’s management system that helps you prioritise tasks, make decisions and follow through. If you find yourself torn between what you think you should be doing and what you feel like doing, this could be a sign.
Many people with ADHD find that conventional advice, such as “tackle the hardest task first”, doesn’t fit the way they work. Instead, they may find themselves drawn to smaller, less urgent tasks, using these as a way to ease into the workday. This can result in an ever-growing to-do list, with the most important tasks always getting pushed to the bottom.
4. Insufficient sleep
A common experience for many adults with ADHD is inconsistent sleep patterns. You may struggle to fall asleep at night, as your brain remains active and alert during the evening. Switching off is hard, so sleep suffers.
Equally, waking up in the morning can be a challenge. No matter how much sleep you’ve had, it may never feel like enough. This constant struggle to balance your energy levels can make daily life, and especially work, feel draining.
5. Restlessness at work
Long meetings can be hard going with ADHD. Restlessness is a common trait, and it can show up as a need to move, or as finding it hard to sit still or focus for long stretches.
You may find yourself needing to fidget or take frequent breaks to refocus. In traditional office settings, this can be misinterpreted as inattentiveness or disinterest, but it may simply be your brain’s way of managing its energy levels. It’s one reason we think fidget toys belong in every meeting.
6. Oversharing in conversations
Oversharing with colleagues, or even strangers, and regretting it afterwards is a familiar story. For a lot of adults with ADHD, impulsivity shows up most in social settings. This can lead to talking too much, saying things that are too personal, or revealing information that you later wish you’d kept private.
While this isn’t always a problem, it can lead to feelings of anxiety or self-doubt after social interactions. You might replay conversations in your head, worrying that you said the wrong thing or shared too much.
ADHD can also look different from one person to the next. If you’re a woman, you may relate to some of the less obvious signs of ADHD in women.
Next steps: reaching out for support
If you found yourself nodding along to any of these points, it might be worth exploring whether you have ADHD. Speaking to a medical professional, usually your GP, is the first step in seeking a diagnosis. They can guide you through the process and provide advice on managing ADHD in your everyday life. The NHS guide to ADHD in adults explains the signs and how to ask for an assessment.
You don’t need to wait for a diagnosis to ask for support at work. Read our guide on reasonable adjustments while you’re going through a diagnosis to understand your options.
ADHD affects far more than work. It touches every part of your day. With the right support, though, you can build routines that work with your brain rather than against it, and noticing the signs is where that starts.
How Enna can help
If you’re job hunting, diagnosed or not, the Enna jobs board lists roles with employers who value different ways of thinking. Register for job alerts to hear about new roles first, and get support with your CV so it reflects what you do best.
And if you manage people and this has made you think of someone in your team, our supporting and managing neurodivergent employees training gives managers practical tools, and our workplace needs assessments pinpoint the adjustments that help someone with ADHD do their best work. Book a call to talk it through.
