I only recently learned that I have a severe case of ADD. It has helped me with a lot of work related things such as the need to fix problems. As a result of that if there's a problem I work on it until its resolved, which has benefited me greatly during my career.
But for every positive case there are just as many negative ones. I have an intrinsic need to answer questions and will often spend an inordinate amount of time doing so, when in fact I could have used that time far more productively.