ADHD Private Diagnosis ADHD Is an illness that affects the way a person functions. It is a neurodevelopmental disorder which can be treated with medication. It is important to remember that this isn't an excuse for bad behaviour. Psychiatrists are among the best-equipped professionals to diagnose ADHD and have access http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1372359