ADHD: Attention deficit hyperactivity disorder (ADHD) is a neurological disorder that impacts the parts of the brain that help us plan, focus on, and execute tasks. ADHD symptoms vary by sub-type — inattentive, hyperactive, or combined — and are often more difficult to diagnose in girls and adults. There are three types of ADHD, including combined-type ADHD, which means that the individual has the inattentive and the hyperactive aspects of ADHD. The other two types are defined below.
Primarily Hyperactive-Impulsive ADHD
People with primarily hyperactive-impulsive ADHD act “as if driven by a motor” with little impulse control — moving, squirming, and talking at even the most inappropriate times. They are impulsive, impatient, and interrupt others.
Primarily Inattentive ADHD (Formerly ADD)
People with the inattentive subtype of ADHD have difficulty focusing, finishing tasks, and following instructions. They are easily distracted and forgetful. They may be daydreamers who lose track of homework, cell phones, and conversations with regularity.
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What Is ADHD? Meaning, Symptoms & Tests