3 doctors weighed in:

How long does a cold sore generally last?

3 doctors weighed in
Dr. David Voron
Dermatology
1 doctor agrees

In brief: See below

Four to ten days.

In brief: See below

Four to ten days.
Dr. David Voron
Dr. David Voron
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Dr. Robert Ryan
Dentistry

In brief: Two weeks

A cold sore is caused by a common virus-herpes simplex.
They begin as a burning sensation in the lip area and this is followed by the formation of a blister. The blister ruptures and leaves a painful ulceration that then crusts over and heals within 10-14 days. There are some topical agents that can speed healing or abort the formation of the blister if caught early.

In brief: Two weeks

A cold sore is caused by a common virus-herpes simplex.
They begin as a burning sensation in the lip area and this is followed by the formation of a blister. The blister ruptures and leaves a painful ulceration that then crusts over and heals within 10-14 days. There are some topical agents that can speed healing or abort the formation of the blister if caught early.
Dr. Robert Ryan
Dr. Robert Ryan
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