On call. I'm bothered by cold sores two or three times a year. What are they, and what can I do about them?
Simon
Harvey B
HB
D006560:Herpes Labialis / Q000188:drug therapy / Q000635:transmission / Q000821:virology*; D018259:Herpesvirus 1, Human; D006801:Humans; D012008:Recurrence