Common issues
Cold sores
Cold sores are caused by the herpes simplex virus, which remains dormant in the body after the first infection. It can flare up again with stress, sunlight, the menstrual cycle, or other infections.
Symptoms often begin with burning or itching before small blisters appear, usually on or around the lip. Treatment works best if started as soon as the first symptoms appear.
When is the service not suitable?
- First-time diagnosis — the initial diagnosis requires a doctor’s assessment with an examination. Recurrent symptoms that you recognize can be handled here.
- Sores or symptoms near the eye.
- Widespread sores or signs that the infection is getting worse.
General advice
Cold sores are a common viral infection that appears as fluid-filled blisters, usually on or around the lips.
What are cold sores?
Cold sores are caused by the herpes simplex virus. After infection, the virus remains in the body for life and can reactivate when the immune system is under strain, such as during other infections or stress. Symptoms often begin with itching or tenderness the day before blisters appear.
Good advice
- Wash your hands regularly with soap if you touch the cold sore
- Use sunscreen on the cold sore if you are out in the sun
- Eat a healthy diet, exercise, and sleep well to support the immune system
Things to avoid
- Do not pick at the sores; let them heal undisturbed
- Avoid sharing utensils or kissing others while the infection window is open
- Avoid acidic fruits (e.g. lemon) and salty foods that can irritate the sores
Pain relief for discomfort
Please note: If you have heart failure, kidney failure, reflux, or stomach ulcers, anti-inflammatory medicines such as Ibuprofen are not recommended.
Treatment and infection prevention
At the first signs (itching or tenderness). Medicine can be bought over the counter at a pharmacy. Best results are achieved within 3 days.
While sores are present. Avoid kissing or cuddling newborns, as they are very vulnerable to herpes infections.
Glossary
Another name for a herpes infection on the lips.
The period from the first symptoms until the sores have crusted over.
The advice above is general and does not replace medical advice. Seek medical attention if symptoms worsen or do not go away.
Please note
Fjarlækningar handles simple, clearly defined issues. Some cases require an examination, testing, or emergency care — and are directed to another care pathway. In emergencies, call 112.
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