ADHD (attention deficit hyperactivity disorder) is a cognitive condition that is usually diagnosed during childhood. The American Psychiatric Association estimates that 8.4 percent of children and 2.5 percent of adults have ADHD.
People with ADHD experience and process information differently than people who are neurotypical. If you have the condition, you may feel that forgetfulness tends to occur more often, and you may find tasks that require using short-term memory more challenging. ADHD can also impact the way that your long-term memory functions.