Cold Sores and Fever Blisters: What You Need to Know
Fun in the summer sun can sometimes lead to cold sores and fever blisters, which are caused by the herpes simplex virus type 1 (HSV-1). These sores are contagious and spread through contact with saliva or skin. Most people are exposed to HSV-1 by the time they’re 10 years old, and after the initial infection, the virus stays dormant until triggered by stress, illness, or sun exposure.
Symptoms and Outbreaks
The first exposure to the virus can cause symptoms like:
- Headache
- Nausea
- Fever
- Vomiting
- Painful swelling
- Open mouth sores
Cold sores typically appear around the edges of the lips, often starting with a tingling or burning sensation, followed by redness and swelling. One or more blisters usually form within 24 to 48 hours.
How Long Do Cold Sores Last?
Initial outbreaks can last 7 to 14 days, with the blisters crusting over within a few days and healing in 10 days. While medical treatment is often not necessary after the first outbreak, keeping the affected area clean and using topical medications can reduce symptoms and help speed healing.
Prevention Tips
To avoid spreading the virus, avoid kissing others or having close contact with them when you have an active fever blister. To prevent cold sores caused by sun exposure, apply sunscreen to your lips.
For more information or treatment options, contact our dentist in Meriden.
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