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Cold Sores

Cold sores are caused by a contagious virus called herpes simplex virus (HSV). There are two types of HSV. Type 1 usually causes oral herpes, or cold sores. Type 1 herpes virus infects more than half of the U.S. population by the time they reach their 20s. Type 2 usually affects the genital area.

Some people have no symptoms from the infection. But others develop painful and unsightly cold sores. Cold sores usually occur outside the mouth, on or around the lips. When they are inside the mouth, they are usually on the gums or the roof of the mouth. They are not the same as canker sores, which are not contagious.

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Results 1 - 10 of 767 for Cold sore
  1. Cold Sores (National Library of Medicine)  
    Cold sores are caused by a contagious virus called herpes simplex virus (HSV). There are two types of HSV. Type 1 usually causes oral herpes, or cold sores. Type 1 herpes virus infects more than half ...
  2. ... virus. It causes small, painful blisters commonly called cold sores or fever blisters. Oral herpes is also called ... the face. Sometimes, the virus later reactivates, causing cold sores. Herpes virus type 2 (HSV-2) most often ...
  3. Cold Sores in Children: About the Herpes Simplex Virus (American Academy of Pediatrics)  
    Herpes Simplex/Children ... Herpes Simplex ... Cold Sores/Children ... Cold Sores ... cold sore; fever blisters; lips; herpes simplex virus; cold sores contagious; can I ...
  4. Cold Sores/Teenagers ... Cold Sores ... Nemours Foundation ... how can you get cold sore herpes, fever blister, blister, blisters on mouth, how do cold sores spread, ...
  5. ... from hot food or drinks Braces Chewing tobacco Cold sores are caused by the herpes simplex virus . They ... tingling, or burning before the actual sore appears. Cold sores most often begin as blisters and then crust ...
  6. Cold Sores (For Kids) (Nemours Foundation)  
    Cold Sores/Children ... Cold Sores ... Nemours Foundation ... cold sores, fever blisters, mouth, lips, infections, infectious diseases, HSV-1, HSV-2, herpes simplex ...
  7. ... herpes, herpes simplex virus, hsv-2, hsv-1, cold sore, mouth, std, sexually transmitted disease, sti, sexually transmitted ... whether or not the other person has a cold sore. Find out why.
  8. ... also known as orofacial herpes simplex, herpes labialis, cold sores, or fever blisters, is a common infection caused ...
  9. Mouth Disorders (National Library of Medicine)  
    ... or even smile. Some common mouth problems include: Cold sores - painful sores on the lips and around the ...
  10. Acyclovir cream is used to treat cold sores (fever blisters; blisters that are caused by a virus called herpes simplex) on the face or lips. Acyclovir ointment is used to ...
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