It means they are healthy if they nose it's wet it means he/she is sick
Since there isnt any choices i believe they need to have a degree in science and medicine in order to become a medical doctor. They need to practice safety and how to deal with medical tools. They also need to practice on how to help a patient in need. <span />
Tommy most likely had ADHD - attention deficit hyperactivity disorder. It is a behavioral condition where children are unable to control their actions, they have problems with concentrating, obeying rules, sitting or standing still, they are impulsive and inattentive.