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.
Depression. 10 to 30% of children with ADHD have a co-occurring mood disorder such as depression. Although many depressed adults move, think and talk slowly, children often demonstrate different symptoms when depressed. 1  For example, children may show extreme impulsive and hyperactive behavior as well as irritability.