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Writer's pictureClaire Stenhouse

Cold sore advice and information

Updated: Jul 8, 2022


DO YOU SUFFER WITH COLD SORES ??

A cold sore is a small, painful, raised area of

small, fluid-filled blisters. They appear where the

lip joins the surrounding skin( but can appear in

other places too eg the nose)Blisters are painful

and leave a yellow crust

Cold sores tend to last 5 to 7 days and can keep

coming back. Most people only have them once

or twice

How do I get cold sores?

Cold sores are caused by a virus (a Herpes

Simplex' virus).

About a third of people who get this 'primary'

infection go on to develop cold sores in later life.

However, many people with cold sores did not

get this primary infection.

What brings on the cold sores?

Cold sores usually appear when people are 'run

down', or ill with something else: for example,

with a cold or flu. Sunlight and ultraviolet light

can often bring on an attack of cold sores.

Occasionally women find that they develop cold

sores at particular stages of their menstrual

cycle.


Are they infectious?


Yes. Cold sores are infectious and the virus can

be passed to other people by close contact

(such as kissing). A cold sore is most infectious

when it is blistering. It is important to try to avoid

touching cold sores, because you can pass the

virus on to other people's hands and even, very

rarely, to your own eyes. Avoid squeezing,

pinching or pricking the cold sore as this can

spread the infection.


Can they be treated?


Yes. Antiviral creams, such as aciclovir and

penciclovir, ease the pain and blistering and

help the sores heal more quickly. You can buy

aciclovir from a pharmacist, but penciclovir may

have to be prescribed by your doctor. You need

to use these creams as early as possible when

the cold sore starts to develop, and you should

apply your cream regularly.


How can I avoid getting one?


Once you have had the virus it stays with you

and there is little you can do to avoid an attack.

How often the cold sores appear varies from

person to person. Always use SPF on your lips


If I have a cold sore should I see my doctor?


Cold sores generally clear up without treatment

in about a week. However, if you have a health

condition that has weakened your immune

system, or if the sores don't heal within two

weeks on their own, see your doctor.


I have a cold sore but am due to see my dentist.

Will they still be able to treat me?


If you have a cold sore and are due to visit your

dental team, check with them first. Some

dentists prefer not to treat patients with active

cold sores as the affected area may be painful,

and may crack and bleed during dental

treatment.


What if I'm breast-feeding?


Don't stop breast-feeding. However, don't kiss

your baby, especially near the mouth or eyes,

while you have an active sore as this may pass

the infection on to your baby

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