Yes, they are the same thing. In 1987 the "hyperactivity" component was added to ADD, which became known as ADHD. Attention Deficit Hyperactive Disorder can be described into three different types.
- Combined type: this is the most common type and is characterized by impulsive and hyperactive behaviors, inattention, and distractibility.
- Impulsive, hyperactive type: this is the least common and is characterized by impulsive and hyperactive behaviors without the presence of inattention and distractibility.
- Inattentive and distractible type: characterized by inattention and distractibility without hyperactivity.