basal cell carcinoma
"I had a small lump removed from below my lip, and was prescribed efudex to be applied twice a day for four weeks. I have just finished that time, so I don't know how effective it has been. I had no reaction for 9 days, then my lip became very swollen and weepy, cracked in the corner. My GP suggested that I put vaseline around the spot before applying the cream, and that helped the lips considerably.  I changed to paw-paw cream, which seemed to help. Now it is six days since I stopped applying the cream and I still have what looks like a large cold sore, as well as the red crustiness under my nose which started only when I stopped the efudex. I am hoping this may go soon. I am not sure whether to put anything on them or not."