A cold sore usually starts with a tingling, itching or burning feeling.
Then over the next 48 hours, small fluid-filled blisters appear, and these can crop up anywhere on the face.
These blisters then burst and crust over, becoming a scab.
Most cold sores should heal within 10 days, but you should bear in mind during this time they are contagious.
Published at Tue, 16 Feb 2021 23:01:00 +0000