A member asked:

Can you get a cold sore by biting on your lip?

A doctor has provided 1 answer

Herpes virus: Cold sore is caused by herpes virus which is transmissible by contact (usually kissing). Once you've been infected you always have the virus which can be reactivated by stress, sunburn, trauma, fatigue, underlying illness, having procedures such as laser or chemical peels.

Answered 9/28/2016

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