question: I have a few noticeable red, round chapped sore spots on my upper and lower lips. I m not sure if I have sunburn or if I am allergic to something. (My only allergy is skin itching with latex ). I do not have the herpes virus (either strain). (I have had serum testing and have kissed no one new since. :-) The red, round, sore spots throb a little bit. What do you think this is? Thanks!