I would start with learning everything you can about ADD. Then I would go see my primary doctor unless I know of a decent psychiatrist.

The most important thing is being knowledgeable on the subject before you see someone. That way you know what questions to ask and you know if the doctor knows what they are talking about.

I am on medication for both ADD and Depression. My depression sounds like yours. My Doctor says it is the type that does not respond well to many meds., if any.