Canker sore from oral sex. Rated this article: Oral antivirals are ineffective if started after the lesions appear. Unprotected oral sex with someone who has HIV. Cerner Multum, Inc. Both cyclovir and penciclovir reduce the duration of cold sore pain and time to recovery, but they must be applied several times throughout the day, especially penciclovir. The doctor will be able to provide an accurate diagnosis sex uterus on a physical exam and other present symptoms. A growing tongue bump that does not go away could be a more serious condition or potentially even cancer. Both are designed to treat the viral infection topically and promote speedy healing. Abnormal vision [ Ref ]. May 5th, 0 Comments.