I was diagnosed with ADHD when I was 16, but my symptoms began when I was about 10. I may have been the only child in school history to be moved around the class room for not talking enough. Unfortunately there was limited awareness of the disorder in the early 1990s and before. I know this is anecdotal evidence and every child is different, but going on Ritalin (and now Concerta) changed my life for the better virtually overnight. One characteristic of ADHD is low levels of dopamine in the brain. Dopamine affects impulse control, concentration and motivation, along with regulating the brain's reward system. Dopamine levels increase when we do something pleasurable, like eating our favorite foods. Medications such as Concerta, Vyvanse and Adderall act to regulate dopamine levels in the brain. Medication alone is not the best solution, imho. Behavior modification, including developing daily routines, is vital for the best possible outcome, but please do not dismiss medication without considering their benefits as much as their risks.