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A 49-year-old member asked:

why do cold sores always blister?

2 doctor answers3 doctors weighed in
Dr. Candace Spann
Dermatology 21 years experience
Location of virus: Herpes outbreaks (cold sores) create viral inclusion bodies in the outer layer of skin (the epidermis). The presence of these viral inclusion bodies disrupts the normal architecture of the epidermis, allowing for the formation of blisters.
Dr. Michael Fisher
Dermatology 32 years experience
Herpes: Viruses exhibit rapid rates of mutation which can make immunity difficult to sustain, especially considering chemical drugs for herpes contain only a single antiviral agent. Once a cell is infected it is difficult to selectively inhibit the virus without harming the host cell. As a result, much interest has focused on plants as strong allies in restoring immune strength.

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A female asked:

Do cold sores always from a blister?

4 doctor answers6 doctors weighed in
Dr. Harlan Wilson
Dentistry 45 years experience
Most likely: A blister is the body's mechanism to fight and repair the cold sore.
A 33-year-old member asked:

How are blisters and cold sores different?

1 doctor answer2 doctors weighed in
Dr. Stephen Gordon
Dentistry 43 years experience
Same: If you are referring to "fever blisters" and "cold sores" they are different names for the same thing, caused by virus (herpes).

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Last updated Aug 7, 2016
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