Herpes Labialis

**Definition:** Herpes simplex, caused by type 1 virus, primarily spread by oral secretions and usually occurring as a concomitant of fever. It may also develop in the absence of fever or prior illness. It commonly involves the facial region, especially the lips and the nares. (Dorland, 27th ed.)

**Tree numbers:** - C01.925.256.466.382.316 - C01.925.825.320.320 - C07.465.409.466 - C17.800.838.790.320.320

**Synonyms:** - Cold Sore - Fever Blister - Herpes Simplex, Labial