I have a rash over both of my lips, not outside them. The rash is small blisters. There are no "sores" to speak of - the entire lip skin area, top and bottom, is covered, although the blisters are more localized in the area where the lips meet when my mouth is closed. My lips are very painful and swollen today. I have had this condition for the last three days although it is much worse today. There is a little bit of pus when the blisters break. I have never had a cold sore and am quite sure I have not recently been exposed to the cold sore Herpes virus. However, I do have genital herpes which is largely under control (1 outbreak per year, no medication). The lymph glands in my neck, next to my throat, are swollen and sore. I do feel a little ill but I do not have a fever and do not think I have any other infection. I have been exposed to sun in the last three days, and I likely did not wear enough sun block. I don't think I have worn any new product (cream, lip gloss etc.) to which I might have developed a reaction. I know the sun can trigger a herpes outbreak if one already has the virus. I tried (probably wrongly) Polysporin, then Vaseline, and saline solution but these options do not help. Although I feel quite sure I have not been in contact with anyone with the oral herpes virus, can the first outbreak of the Herpes oral virus cover the complete lip, top and bottom, without going outside the lip line? Can the genital herpes virus turn into the oral version or are they completely separate? Is a sunburned lip likely to have small blisters? Can one get "heat rash" or "prickly heat" rash on the lips? What should I do for treatment?