Dr. Sean McDonnell:

No, it is not inevitable. It is often a choice. Families make this choice and often they do so based on what they perceive to be the educational needs of their children. Children with ADHD have a tendency to fall behind rapidly in their schooling. Parents are often of the opinion that medication will help their children to maintain themselves in the school and academic environment. Unfortunately, parents often engage in medication holidays, so they will give medication for short periods of time and then stop during break times. It is a parental choice but it is a medically-informed one. It is important to note this point.