What is a cold sore?

"fever blister" Cold sores are little blisters that form on the lips or mouth. They are caused by a herpes simplex virus. The blisters often break open and leak a clear fluid, then scab over after a few days.
A virus infection. Cold sores on the lips or near the lips, are usually caused by oral herpes virus. They start as a slightly raised reddish area, then form a cluster of tiny blisters, which break open the next day, leaving a sore (ulcer) to heal up over a week. Sores appear more often when a child is under stress or is ill from another illness. Younger babies with herpes should see a doctor when a sore appears.
Viral infection. A "cold sore" is caused by an infection by herpes virus type i. Most of us are infected by this type of virus in childhood. We get better, but the virus becomes dormant in our bodies and can be reactivated, causing cold sores. The virus is often reactivated by illness or stress.

Related Questions

What causes of cold sore?

Learn about HSV. Cold sore = herpes....It has nothing to do with 'having a cold'. It's a common infection and can be transmitted whenever a sore is present and even when one is not.
Cause is herpes. Simplex virus. Triggers for cold sores can include illness, stress, fatigue, becoming physically cold, dry air, UV rays (sun), mouth trauma or one's period.
Cold sore. Cold sore is caused by virus called Herpes simplex. Most common way to catch it through kiss. It can present as tingling followed by blister formation which can last for few days. It is very infectious. Usually blister leads to scab which disappears over few weeks but virus can lay dormant in nerve and can get activated at later stage. Http://patient. Info/health/cold-sores-leaflet.

What does a cold sore look like?

Cold sores. Usually they look like blisters. Painful. Commonly on lips, mouth, nose and throat.
Herpes. Shallow, grey, sometimes with a slightly red border, quite tender.

What is a cold sore remedy that works within 2 days?

Laser tx. Your Dr can prescribe oral Valtrex (valacyclovir) or another antiviral medication. Laser txs are also used to treat cold sores. Melissa Officinalis or lemon balm (cream) expedite healing of cold sores. It can reduce healing time by 1/2. Studies also show that regular use can help v recurrences. Brief supplementation w lysine 1, 000mg orally 3 times a day at onset, can also hasten healing. Cold sores will still.

Can you tell me what can a cold sore/fever blister look like?

Cold sore. A cold sore is a lesion with blisters (lip, chin, cheek, nostril ; sometimes mouth) which causes burning, pain ; itching. It breaks open ; releases fluid that is teaming with the herpes simplex type 1 virus.

What leads to cold sore, herpes simplex virus?

Yes. An estimated 80% of americans have been exposed to herpes simplex virus type 1. However, not all of those people will get cold sores. It depends on your immune system. Cold sores are painful liquid filled blisters that can occur on the lips, roof of the mouth or the gums which are caused by the herpes simplex virus (hsv-1). Tingling ;/or pain can herald the oncoming of cold sore 1 to 2 days prior.

I have had a cold for a few days and I have been blowing my nose a lot and now I have what looks like cold sore blisters below my nose. What can it be?

Blisters. From the friction of the constant blowing our nose.....Try not to squeeze on your nose too hard. Also, you can try the tissues with the built in moisturizer. Or simply, moisturize after blowing your nose.
Sore nose. This sounds like abrasions from blowing your nose so much with superficial skin breakdown. There may be a mild superficial localized infection in the skin. A topical antibiotic like neosporin or Bacitracin 2-3 times a day should clear it. If it gets worse, then go see your doctor or an otolaryngologist.

What can help my cold sore heal?

Cold sore. Cold sores are usually viral in nature and treated with otc meds or warm saltwater rinses. If you suspect, herpes, there are prescription medicines available. See your doctor to confirm it and receive the prescription.
Cold sores. Melissa officinalis or lemon balm (cream) expedites healing of cold sores. It can reduce healing time by half. Studies also show that regular use can help v recurrences. Brief supplementation with lysine 1, 000mg orally three times a day at the onset, can also hasten healing. Your physician can prescribe oral valtrex (valacyclovir). Laser treatments are also used to treat cold sores.