Cold sore in Ireland: when to see a GP

The lip tingles while you are brushing your teeth. Here is what a cold sore is, how long it lasts, how it spreads, and when to see a GP in Ireland.

You catch it in the bathroom mirror. A tingle on the lip, then a tight spot, and you have a meeting at ten. That is usually when people search cold sore and hope it will be gone by lunch.

A cold sore is common. Most clear on their own. Some need a GP the same day, especially around a baby, the eyes, or skin that already has eczema.

Book an appointment if you already want a GP and you are well enough to talk. How it works, services, and pricing show the steps and the live fee.

What a cold sore is

The HSE describes a cold sore as a tiny fluid-filled blister caused by the herpes simplex virus. It shows on the face, most often on the lips. In adults the same virus can also cause sores on the genitals.

It often starts with tingling, itching, or a burning feeling. Over the next 48 hours, blisters may appear, leak fluid, and crust into a scab. A child can also get clusters in the mouth and on the tongue, sometimes with a high temperature.

Read the HSE page: HSE: cold sores.

How long a cold sore lasts

The HSE says a cold sore usually clears within 10 days. It does not leave a scar. The tingle can start before you see a blister. Picking the scab keeps the sore open longer.

How a cold sore spreads

Most people meet this virus young, after close skin-to-skin contact with someone who has a cold sore. Kissing passes it on. So does sharing a cup, a towel, cutlery, or lip balm that has touched the sore. Do not kiss anyone while you have one, and do not share those items.

A cold sore can be fatal to a newborn baby. Kissing a baby when you have one can lead to neonatal herpes, a serious infection in the first weeks of life. Wash your hands before you touch a baby. Cover the sore before you breastfeed, and do not touch the sore and then the breast. Do not let anyone else with a cold sore kiss the baby.

Older babies and children can rarely get encephalitis (inflammation of the brain). The warning signs are below. A child who touches the sore and then rubs an eye, or sucks a finger, can carry the virus there. They can usually go to childcare or school if they feel well. They should skip close contact until the sore has healed.

A blocked nose and a cough sit with cough or cold in Ireland. Cheek pain sits with sinus pain in Ireland.

Home care and hygiene

Drink plenty of fluids. Eat cool, soft food if the lip is sore. Salty or acidic food can sting. Wash your hands often with soap and warm water. If a child has a cold sore, wash their clothes separately. Use a sunblock lip balm of SPF 15 or higher in the sun.

Do not touch the sore, except when you are putting a cream on it. A pharmacist can advise on creams.

When to see a GP for a cold sore

Contact a GP if you or your child has any of these:

The cold sore has not started to heal within about 10 days
It is very large or very painful, or outbreaks are frequent or severe
The sore is on the eyelid or around the eyes
A newborn is in the house, or you are pregnant
You have a weakened immune system
The gums are swollen and painful, with sores in the mouth
Sores have appeared on skin that already has eczema

Pregnancy raises the chance of neonatal herpes. Sores on eczema need a GP the same day too. The virus can spread across that skin.

The GP decides on treatment where clinically appropriate. Booking does not guarantee a prescription. Paying for the visit does not buy treatment. Illness Benefit and some employer forms can still need your registered GP. See your registered GP.

Red flags: call 112

Call 112 or 999, or go to the nearest emergency department, if a baby or child with a cold sore has any of these. The HSE lists them as possible signs of encephalitis.

Confusion, or a change in behaviour such as being very irritable
Trouble speaking, trouble waking, or being very drowsy
Floppy and unresponsive
Trouble breathing, faster breathing, or grunting
A blue tongue or blue skin
A seizure

BookMyDoc is a planned GP visit, not overnight cover. If you are unsure whether it can wait, read online GP or A&E in Ireland.

How an online GP can assess a cold sore

On a video visit the GP can see the lip, the skin near the eye, and any spread onto eczema. Hold the phone still in good light. Say when the tingle started, who else is in the house, and whether anyone is a newborn. Mention pregnancy, eczema, and immunity. Video or phone walks through that choice. Phone is enough when you can describe the sore clearly.

Pick Online Consultation on the booking screen. Weekday online visits are usually €35.99, during 8:00 AM to 6:00 PM, Ireland time. Evenings (6:00 PM to 8:00 PM) are usually €40.00. Weekends (8:00 AM to 8:00 PM) are usually €40.00. Same-day slots run out. Check the live amount on pricing before you pay.

A first chat is an Online Consultation. A return visit is a Follow-up Consultation or a General Medical Review. Our services lists each one. An online GP cannot look inside the eye. If the sore is on the eyelid, or sight has changed, they will send you to be seen in person.

Book if the cold sore is not settling

If the cold sore is still there after the home days, or it keeps coming back, talk to someone. Book a phone or video appointment with an IMC-registered GP.

WhatsApp +353 899805438, email [bookmydoc.ie@gmail.com](mailto:bookmydoc.ie@gmail.com), or the contact page. Facebook is bookmydoc.ireland.

Frequently asked questions

How long does a cold sore last?

It usually clears within 10 days and leaves no scar. Contact a GP if it has not started to heal by then.

Can I kiss my baby if I have a cold sore?

No. A cold sore can be fatal to a newborn. Do not kiss the baby. Wash your hands before you touch them, and cover the sore before you breastfeed.

When should I see a GP for a cold sore?

See a GP if healing has not started in about 10 days, outbreaks are frequent or severe, the sore is near an eye, a newborn or someone with weakened immunity is involved, or sores sit on eczema.

Can a video GP look at a cold sore?

Yes, when you are not in the red-flag list. Video shows the lip and the skin around it. It does not replace an in-person eye exam if the sore is on the eyelid or sight has changed.