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Cold sores (Herpes labialis) are blisters
on or around the lips caused by a viral infection. The Herpes Simplex
virus which gives rise to the sores is dormant until stimulated by a
variety of causes ranging from sunburn and chapped skin to allergies and
anxiety. The blisters appear after a brief period of itching and
burning, last for a few days, burst and then form a hard crust that
usually takes a week or so to heal.
Keeping the blisters dry will speed healing. Early application of
some kind of drying lotion – alcohol, camphor, surgical spirit or a
specific over the counter cold sore preparation – can prevent the
blisters from erupting and reduce the healing period further.
Don’t squeeze the blisters – you may spread the infection. Wash your
hands regularly and keep your towel separate. The condition can recur.
See your doctor if it does frequently, is severe, or if you get an
eruption near the eye.
It can be serious in some infants and adults with atopic dermatitis.
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