A member asked:

I have woke up this morning with both my lips swollen and i have a blister on my top lip and i have no idea what it could be or how it has come along?

1 doctors weighed in across 2 answers

May be a cold sore: It sounds like you may have a cold sore. These are caused by a virus in the herpes family. Less likely, you may have an allergic reaction to something that touched your lips. If there is pain or tingling, it would suggest a cold sore. Only itching would lean more towards an allergic reaction.

Answered 11/3/2012

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May be a cold sore: It sounds like you have a cold sore that is caused by a virus in the herpes family. If you feel any burning, pain or tingling in the area, then it is most likely so. Another less likely cause, may be an allergic reaction to something that touched your lips. If so, you would feel more of an itch.

Answered 11/2/2012

5.5k views

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