ADHD Diagnosis An ADHD diagnosis can help someone to understand the reasons why they have difficulty with certain tasks and activities. It can increase self-esteem and help those with ADHD in determining effective treatment strategies. The NHS in England offers an adult ADHD assessment. This is called Right to Choose. https://telegra.ph/10-Times-Youll-Have-To-Learn-About-Private-ADHD-Assessment-Manchester-04-08