Though ADHD has long been thought of as a condition that only affects children and young adults, symptoms persist for as many as 60 percent of patients who were diagnosed with ADHD while adolescents.

Millions of adults around the world are diagnosed with ADHD every year, and there is a great need for research in the field.

Only a few decades ago, it was believed that ADHD was something one outgrew during adolescence. However, about half of those diagnosed at a young age carry it into adulthood.

One in four US adults suspect they have undiagnosed ADHD, a new study finds, but only 13% have shared their concerns with a doctor.