Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Are Cold Sores (Fever Blisters) Contagious?
Medically reviewed by Dr. Otari Nergadze, Neurosurgeon | Updated: January 2026
- What Is It?
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Contagious
- Are cold sores contagious?
- How do you get cold sores?
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Symptoms
- What are cold sore symptoms?
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Treatment
- How to get rid of cold sores?
- Should I see a doctor for cold sores?
What is a cold sore (fever blister, HSV-1 HSV-2)?
- Cold sores are inflamed blisters in or near the mouth and lips.
- A herpes virus causes cold sores.