just wondering if you got any replies or more information on your problem? When I read your email, I thought I must have written it - I have the same symptoms exactly!!! And no idea what to do ... Dr.'s so far have no clue at all. They have prescribed aluminum chloride anti-perspirant, which is not something you want to apply to that area!
Well, let me know what you have found out - I am just starting my research and would be happy to share info.