Actually, research tends to indicate that very few people with anxiety also suffer from ADHD/ADD, although, of course, that is always a possibility. Most people with anxiety have ADHD symptoms
but, in fact, do not have ADHD
(this is why so often one will read that Ritalin or similar medication is not working).
I also believe that mild/moderate anxiety can be helped with herbal and/or natural remedies. So, why not try this route as a first option.