How ADHD Affects Adults Differently Than Children

Attention-deficit hyperactivity disorder (ADHD) is one of the most common neurodevelopmental conditions, affecting more than 15 million American adults. Although it’s often associated with children and teens, ADHD isn’t something you “grow out of.” In fact, its symptoms evolve over time.

Without treatment, ADHD can significantly affect relationships and work performance. At Broderick Healthcare in North Reading, Massachusetts, Kathleen Logan, FNP-C, regularly diagnoses and treats ADHD in adults. Here, we explore how ADHD affects adults differently than children and explain the importance of getting help.

Core symptoms manifest differently

Children with ADHD typically have trouble sitting still and focusing in a classroom setting. They may also have trouble controlling impulses, blurting out thoughts, or interrupting others during conversation. 

In adults, impulsivity and hyperactivity still exist, but they’re more internalized. For example, you may experience racing thoughts, restlessness, or forgetfulness, making it difficult to stay organized and on task. 

Impact on daily life and responsibilities

Children and teens with ADHD often have trouble following rules and meeting adults’ expectations. In school, this can result in trips to the principal's office, detention, or conflicts with classmates. 

In adults, these same types of struggles persist, but they look different. For instance, you may have trouble staying on top of your finances and budgeting accordingly, or you might have difficulty paying attention to your partner when they have something on their mind. Over time, these issues can cause stress and shame, affecting your outlook and quality of life. 

Emotional regulation and mental health

Adults with ADHD often struggle to regulate their emotions, resulting in irritability and mood swings. Without intervention, this difficulty in self-soothing can increase the risk of mental health conditions, such as anxiety and depression. 

Similarly, ADHD can lead to reliance on unhealthy coping mechanisms, such as alcohol or recreational drugs. While these substances may temporarily mask symptoms, they don’t resolve them, which can create a vicious cycle of ups and downs.