How Much Does A Private ADHD Diagnosis Cost? You might have to take the private route if are an adult suffering from ADHD. This is a good alternative, since private psychiatrists are skilled in diagnosing ADHD in adults. They will also test for co-morbidities, like anxiety and depression, which are http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1372554