Can get tested by a doctor.Of course,do you have symptoms?Does your teacher or your parents think you have?Adults can also be diagnosed as well.Years ago,,we didn't know re this disorder so many adults today may have this this and are being diagnosed today
To know whether you have ADHD, you may have complexity in paying attention to details and often you tend to make hasty mistakes. Also, you keep on procrastinating activities. Check more details on http://www.webmd.com/add-adhd/guide/adhd-symptoms.
Have the person see the family physician. This is not a serious condition and is easily treatable with medication and/or practicing routines.. A good diet with more protein and less carbs also helps the person to stay focused.