What are common signs of ADHD in adults?

Asked by CA
Answered
07/29/2025

Great question. In many cases, adults have experienced symptoms of Attention Deficit Hyperactivity Disorder (ADHD) since childhood or adolescence but have remained undiagnosed. They may have exhibited similar symptoms during their younger years, but as life’s demands increase, these signs can intensify and significantly impact their day-to-day functioning.

As research continues to advance and mental health support becomes more accessible, ADHD in adults is becoming better understood. When most people hear Attention Deficit Hyperactivity Disorder, they often think of children who have trouble sitting still or focusing. However, attention deficit can present differently in adults. Here are a few common signs of adult ADHD:

  • Disorganization: Difficulty with organizational skills is a common sign of adult ADHD. This can show up as challenges with keeping things in order, managing time effectively, frequently losing items, or missing important appointments and deadlines. Disorganization may also include forgetfulness in various areas of daily life. 
  • Difficulty Focusing: Adults may experience challenges focusing while attempting to complete tasks or engage in conversations. They can also be easily distracted and have trouble concentrating which can look like starting many projects but not having the ability to finish them.  
  • Hyperactivity/Impulsivity: These signs can show up in various ways in adults, ranging from interrupting others, talking excessively, frequently switching topics, refraining from thinking of the consequences of their actions and having difficulty relaxing, which can lead to fatigue or sleep issues. 
  • Mood Swings: Fluctuating moods, such as irritability or frustration are common in adults with ADHD. These emotional shifts may stem from the inability to focus, complete tasks or having a low tolerance for stress and everyday challenges. Feelings of anxiety or guilt can also appear, often impacting one’s overall self-image.
  • Lack of Motivation: Lack of motivation is often misunderstood and commonly associated with depression or laziness, but it’s also a frequent symptom of ADHD. For adults with ADHD, this lack of motivation can stem from difficulties with focus, feeling overwhelmed, or executive functioning challenges, often leading to procrastination and unfinished tasks.

ADHD symptoms can vary greatly from person to person, both in how they appear and in their severity. If any of the signs mentioned resonate with you, consider seeking professional support and remember to offer yourself compassion along the way. A proper diagnosis, along with guidance from a therapist who understands ADHD, can help you gain deeper insight into yourself and develop effective strategies to enhance your well-being and daily functioning.