Yes, Efudex or Carac will normally cause "erosion" and you also have to be careful of sunlight, etc. If your doc is just thinking AK, then what is the hurry? But you may look into the "blue light" therapy option. Here is a link with basic info. Some insurance may not cover it however. Regards, Whitey
http://www.cancer.org/docroot/ETO/content/ETO_1_4X_Photodyna