A 22-year-old male asked:
when i eat ketchup, i get these cold sore like things on my lips, what am i allergic to ? fastest to get ride of them? can i use oragel if it was exp?
1 doctor answer
Dr. Justin Greiwe answered
11 years experience Allergy and Immunology
Cold Sore From HSV-1: Herpes simplex virus type 1 (HSV-1) is the cause of cold sores. HSV sets up shop in your ganglion neurons and reactivates during times of stress or when your immune system takes a hit. Pain, burning, tingling, and itching often proceed outbreaks which last around 5 days. Herpes is one of the most common infections with around 90% of people worldwide effected. This is not an allergy reaction.
Answered on Mar 7, 2015
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