These three symptoms are hyperactivity, impulsivity, and inattention though the degree to which each of these symptoms may vary2. Inattention leads to serious difficulties in focusing one's attention on one single object: a few minutes are enough for such people to get bored with a task. Any activity, which requires deliberate, conscious attention or mental organization to effectively cope with a task, is difficult, sometimes impossible to people with ADHD. Hyperactivity results in failure to maintain calm during any long period of time. Squirming the sear, roaming around the class, wiggling feet, touching everything within the reach, doing several things at once suddenly bouncing from one activity to another - these behavioral patterns are common to hyperactive children and adolescents. And finally, impulsivity manifests in inability to control the immediate reactions and think before acting. Impulsivity makes behavior impossible to predict: interruptions of speech, word salad; running into the roadway without looking around first; sharpened irritability are most common signs of impulsive behavior3.
Although no direct visible correlation has been confirmed to exist between ADHD and mortality, studies suggest that ADHD is a serious risk factor that often leads to s