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A 24-year-old female asked:

I get cold sores before my period maybe twice a year. is it normal to get cold sores before your period, what could be the cause and how can you prevent them?

2 doctor answers5 doctors weighed in
Dr. John Despain
Dermatology 38 years experience
Herpes and stress: Herpesvlikes stress be it physical or emotional. This common viral infection is certainly the most likely diagnosis. Getan exam while broken out for the best diagnosis and treatment of this painful contagious viral infection.
Dr. Caren Reaves
Obstetrics and Gynecology 25 years experience
Herpes virus: The herpes virus causes cold sores and outbreaks often happen during times of stress to you body, like your period. You can prevent them by trying to get good rest and avoiding stress. Talk to your doc to have some medicine, usually valacyclovir, on hand and begin taking it as soon as you feel the first sign it's coming. It will help shorten the length and severity of an outbreak.
Last updated Jun 3, 2014


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