Today, we know ADHD, or attention-deficit hyperactivity disorder, as the official name for the condition that causes symptoms like difficulty focusing, impulsivity, and paying attention. But before there was ADHD, there was attention-deficit disorder, or ADD. This was used from 1980 up until 1987, when it was renamed ADHD. And now, a new term is popping up: EDHD, or energy deficit hyperactivity disorder. EDHD isn’t an official medical diagnosis.