A family member will notice this behavior if they keep an eye out for restlessness. These fusses can range from a child not staying in one place or simply tapping the pencil excessively. Even if the child is told to stop at least four or five times, he will continue to do so due to his restless nature. Most of the time, adults with ADHD are always on the go and unable to hold down a stable job. As they age, their impulse control becomes more severe and they develop risky behavioral problems. For example, resorting to alcohol consumption or drug abuse. All of these activities are classified as thrill-seeking, which is why an adult with ADHD has a need to engage in them. Therefore, adolescents and adults with this disorder have such intense behaviors because they are looking for something that exists