How Much Does a Private ADHD Diagnosis Cost? You might have to take the private route if you are an adult who suffers from ADHD. This is a good option since many private psychiatrists have experience in diagnosing adults with ADHD. They will also check for co-morbidities such as anxiety https://privateadhdassessment24443.alltdesign.com/11-faux-pas-that-are-actually-okay-to-create-using-your-adhd-diagnosis-private-uk-49204102