5 Common Misdiagnoses That Might Actually Be ADHD

Sam Dylan Finch | May 5, 2021

Misdiagnoses are more common than you'd think.

For too long, the media has presented attention deficit hyperactivity disorder (ADHD) as an overdiagnosed condition, especially in children.

But the reality is, there are plenty of people — adults in particular — who have yet to be correctly diagnosed.

Because much of the early diagnostic criteria focused on children, adults with ADHD are increasingly joining the “late diagnosis club.” Commonly, many of these adults have been misdiagnosed with other psychiatric conditions first.

ADHD is typically understood to include distractibility, lack of focus, difficulty completing tasks, restlessness, and more.

The “and more,” however, isn’t talked about nearly enough. It’s often why ADHD is missed in the first place! This can include struggles like poor self-esteem, emotional dysregulation, sensitivity to criticism and rejection, and anxiety.

So let’s talk. What are folks with ADHD being misdiagnosed as, and more importantly, why does it happen? Here are five common misdiagnoses.

1. Major Depressive Disorder

Research has increasingly shown that emotional dysregulation is a core aspect of ADHD. This includes feeling negative emotions — like irritation, sadness, and anger — more intensely than our neurotypical counterparts. This, combined with our struggles in relationships, school, and work, can greatly impact our mood.

While depression can exist alongside ADHD, it’s worth speaking to a clinician if you’re still struggling (especially with concentration and focus) despite receiving treatment.

2. Generalized Anxiety Disorder

Missed deadlines and appointments, procrastinating until the very last minute, rocky relationships, difficulty completing tasks and finishing projects... When you have ADHD, there’s a lot to be anxious about! It’s no wonder half of us are diagnosed with an anxiety disorder.

While you’ll often spot the two together, some clinicians are quick to diagnose the anxiety but not ADHD. If you have trouble concentrating and completing tasks, this can be an indicator that something more is going on.

3. Social Anxiety Disorder

Speaking of anxiety, it’s not uncommon for people with ADHD to be anxious about social situations, too. Maybe it’s because we often blurt things out or speak out of turn. It could also be because we’re sensitive to perceived rejection or criticism, known as Rejection Sensitive Dysphoria.

Our sensitivity, perfectionism, and intense emotions around relationships can throw some clinicians off the ADHD trail. Finding a clinician that’s more familiar with ADHD can be helpful in ruling other disorders out.

4. Borderline Personality Disorder

Rejection Sensitive Dysphoria can be an intense and overwhelming experience. Our reactivity, particularly to abandonment and criticism, can lead us to behave in extreme ways. It’s not uncommon to hear about people with RSD having emotional outbursts, intense rage and anger, or even engaging in self-harm.

Clinicians who focus on the rejection sensitivity may mistake it for Borderline Personality Disorder, of which a fear of abandonment and turbulent relationships are a key feature.

However, upon closer examination, it may in fact be a manifestation of ADHD if other symptoms — like lack of concentration and difficulty completing tasks — are present.

5. Bipolar Disorder (Type II)

Bipolar disorder? Yes, this misdiagnosis is more frequent than you might think. Bipolar disorder, particularly type two, involves hypomania — which includes impulsivity, restlessness, elevated mood, talking fast, inflated self-esteem, and irritability — which can quickly shift into a depressed mood.

ADHD can include many of these same challenges as well. And since emotional dysregulation is also a part of ADHD, the likelihood of misdiagnosis is quite high.

If you think you’ve been misdiagnosed…

Diagnosis is an imperfect science, and clinicians are human beings! Misdiagnoses can happen. It’s always best to speak to a specialist with experience treating ADHD for the most accurate evaluation. You can also read more about the experiences of people with ADHD to see what resonates with you.

Remember, it’s never too late for an accurate diagnosis. If you’re questioning the labels you’ve been given, don’t hesitate to reach out for support.

Looking for support? Inflow, an ADHD management app, is here to help. Our science-backed program helps people with ADHD learn to thrive. Learn more about how Inflow can help you reach your potential by downloading our app on the App Store or on Google Play!

Sam Dylan Finch is the Content & Community Lead at Inflow. You can find him on social media @SamDylanFinch.