What causes cold sores?

Herpes simplex virus. Oral herpes, occurs with symptoms of cold sores or fever blisters, is an infection of the mouth and cause by herpes simplex virus type 1 and type 2. After initial infection, the viruses are transported to the sensory nerve cell bodies, where they become latent and reside lifelong. Upon trigger, these virus then multiplies new virus particles, transport, and releases to the nerve terminal.
Herpes virus returns. Cold sores on the lips or near the lips, are usually caused by recurrent oral herpes virus. They start as a slightly raised reddish area, then form a cluster of tiny blisters, which break open soon, leaving a sore (ulcer) to heal up over a week. Sores appear more often when one is under stress or is ill from another illness. Younger babies with herpes should see a doctor when a sore appears.
Herpes virus. Cold sores are caused by the herpes simplex virus (hsv). There are two types of herpes simplex virus: hsv-1 and hsv-2. Both virus types can cause sores around the mouth (herpes labialis) and on the genitals (genital herpes).

Related Questions

What causes cold sores?

Herpes virus. Cold sores are typically caused by the type I herpes virus. It is very common and distinct from genital herpes, which is typically caused by the type ii herpes virus, although there is some overlap between the two.
Virus reactivation. Cold sores are caused by reactivation of a latent ("sleeping") virus in the nerves that supply sensation to the inside of the mouth. This is a "herpes" virus, but is most often not the same virus as the one that causes genital herpes. After contracting the virus from someone else's oral cavity, the virus can be reactivated by various triggers, including a common cold or other stressors.
Cold sores. The cause of cold sores is debillitation. If you were previously sick, overworked yourself through over exercise, or work, if you have been through a surgery your body mechanisms for self defense have been compromised. Cold sores are viruses that are always with you and normally cause no harm except when they can take advantage of your compromised situation.
Slow virus. Herpes simplex virus causes an acute infection in childhood. Then it can become a dormant virus in some people that produces cold sores when it is reactivated by an insult to the immune system. The insult could be another infection, sun light, stress, or barotrauma.

What causes cold sores?

Herpes simplex. Real cold sores, which usually occur on the edge of the lips, are caused by herpes simplex virus. This is contagious by touch, and that is touching anywhere. So if you have active cold sores, you need to practice good handwashing anytime you might have touched the sore. Unfortunately, you can also spread them when you don't even have an active sore, in your saliva.
Cold sores. Actually, there are a couple of lesions people call "cold sores". 1) the painful red ulcerations in the mouth that stay around a couple of weeks and the go away - they are actually multifaceted. One possible factor is vit b deficiency. Another is a reaction to sodium lauryl sulfate (in most tooth paste. 2) canker sores on the outside of the mouth caused by a type of herpes virus - which are contag.
Herpes. Human herpes virus type i. This is the classic cold sore or fever blister that pops up under stress of infection or sun light irradiation. It occurs on the junction between mucous membrane and skin as on lip or nasal area. Aphthous ulcers and canker sores occur only on mucous membranes. They're due to other viruses. The only cause for fever blisters is hhv-i.

What causes cold sores?

HSV1. 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). 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.

What causes cold sores and how do I get rid of it?

HSV. Cold sores are. Caused by herpes simplex virus (hsv) and usually one catches it from kissing an infected person, eating utensils or touching that person's saliva. Usually form around mouth on lips and looks like small blisters. Currently laser treatment can cut the viruses cycle from 14 days to less than 5 or 6 days. Ask your dentist about the laser treatment, it has worked great on my patients.
Stress & virus. Cold sores are typically caused by a virus that lives in the nerves. Stress, or colds can cause cold sores to erupt because they both lower your immune system. The best way to treat them is to begin treatment as soon as you notice the "tingling" feeling before the break out. Daily lysine supplements may help. Daily anti-viral medicines will also help.
A viral infection. Most cold sores are caused by the oral variety of the herpes virus. Once exposed to the virus, typically as a child, it never completely goes away. It flares up occasionally and causes sores which last from 7-10 days before healing. It tends to flare up when your immune system is down already, like after a cold, or lack of sleep, or times of stress. Topical antiviral creams can shorten the time.
TOT. Tincture of time! 7-10 days duration. Some anti- viral drugs can decrease symptoms and duration somewhat. Don't forget too much sun is a primary stressor that causes flare ups! Alway protect lips when out for a day in the sun!
Herpes simplex. Once you get this virus it stays with you the rest of your life. Comes out when you have other infections, under stress, or for no good reason. If frequent you can reduce frequency and severity with antivirals. See a doctor.

What causes cold sores on the lips not to go away?

Cold sores are... Ulcers caused by a viral infection. If you have a single ulcer that does not go away you need to be sure it is not a cancer. If you have multiple ulcers that do not resolve you probably have an immune system issue. This may be as simple as chronic stress or something more serious. You should probably see your doctor.
Reinfecting. Although cold sores and canker sores are often confused for each other, they are not the same. Cold sores, also called a fever blister or herpes simplex type 1, are groups of painful, fluid-filled blisters. Unlike canker sores, cold sores are caused by a virus and are extremely contagious. Also, cold sores typically appear outside the mouth -- usually under the nose, around the lips, or under the.

Can anyone tell me what causes cold sores and how do you get rid of them?

Cold sores. Cold sores are herpes simplex virus 1. They enter body through a break in the skin when a person comes into contact with an infected person. Avoid kissing anyone with cold sores, sharing utensils, razors, drinking from water fountains, sharing cups, straws to avoid contracting cold sores. Acyclovir cream, otc creams reduce pain. Oral Vatrex and Famvir (famciclovir) target the virus by prescription.
Cold sore virus. Herpes Simplex Virus type I causes cold sores. There is no cure for cold sores but they can be controlled with anti-viral medications like acyclovir and valcyclovir.
Herpes simplex virus. Usually hsv type 1. Once acquired, usually as a child, it is retained for life. Most people have it without any symptoms. Some get "cold sores" occasionally, some frequently. An attack may occur without obvious cause. Fever may trigger it. The most common cause is sun exposure when not used to it. Emotional stress is not a likely trigger. Treat with valacyclovir 2 G (2 pills) at the first tingling.

Help docs! I'm trying to find out what causes cold sores and how do you prevent them?

Virus. Cols sores are a result of a herpes virus infection of the skin in the area. They can erupt during times of stress or when there is any other irritation of the lips and mouth. There are a number of otc medications that can shorten the duration of outbreaks.

What causes cold sores in mouth?

Herpes virus. Typically precced by some type of trauma, bite lip, taco chip scrape etc.
Virus usually ; alot. But for you. ....How to deal with this. Increase your vitamin c, b complex vitamins twice a day. Go vegan for 10 days...No alcohol, or smoking for ten days. Rest, relax read a good book. Be at peace with yourself..... I know hard this is to do with life knocking on your door. Be brave. Kind hearts. You can do it. Do it for you.