They don't stand for anything. KISS is not an acronym; it means nothing more than the word kiss. And it certainly does NOT stand for Knights In Satan's Service. See the â¦ Related Link below. Absolutely nothing. They wanted an inflammatory name with four letters, and because they couldn't have the f-word they picked Kiss as the next best.
The symptoms of ADHD appear to arise, on average, between 3 and 6 years of age, particularly for the subtypes of ADHD associated with hyperactive and impulsive behavior. Others may not develop their symptoms until somewhat later in childhood.
Trends in ADHD diagnosis and stimulant treatment. ADHD is a psychiatric disorder with a long history. It was first described by the English pediatrician Sir George Frederick Still in 1902, and initial diagnostic classifications emphasized the symptoms of hyperactivity and impulsivity.