I got diagnosed and medicated, significantly improved my ability to work, got promoted way past what I ever would have expected ... and still feel like a fraud

I got diagnosed and medicated, significantly improved my ability to work, got promoted way past what I ever would have expected ... and still feel like a fraud who doesn't really have ADHD and who will get caught out any minute. But I'm still glad I sought help, even if it didn't fix the underlying self-doubt and self-derision.