have you seen a dermatologist?
If not, that is who should be addressing your stated concerns!
If you have and they have nothing more to offer, then explain that you
are still distressed, be very clear about the questions you need answers
to, and see a different derm doc if the answers you need are not
forthcoming.
However, be prepared to learn that the answer you want is not
necessarily available.
sorry I can't be more helpful, buth this is the course of action I would
take.
Brian
(Unable to receive email at brian at pacbell.net)