Cold sores / fever blisters

Cold soresFever blisters caused by the herpes simplex virus type 1 (HSV 1).

Infection was taken by direct contact with someone who has the virus. It can also be obtained from a person carrying the virus but have no symptoms.

Like other viruses, including the herpes virus family, the virus remains in the body forever once obtained.

Fever blisters triggered by exposure to stress, sun and infection.

If caught early, acyclovir is an effective treatment.

Alternative name

Cold sores


Fever blisters or cold sores with a small red blisters white centers that appear on or around the lips. They can also be found in the mouth, but it is more common.


Fever blisters caused by the herpes simplex virus type 1 (HSV 1). HSV-2 causes a small portion of cold sores. The virus is spread among individual children by saliva contamination toys, hands and other objects during work or play in children can choose the virus by kissing someone who has the virus. The spread of infection can still occur from someone who did not have visible injuries, but the virus in its saliva.

Once the virus in the body will be there forever and most adults acquired in early childhood. The virus acquired during childhood can cause a mild infection that goes unnoticed or febrile illness with severe sores in the mouth, known as primary oropharyngeal herpes. The disease is highly visible due to extensive blisters in the mouth and on the lips of children, causing pain, discomfort and inability to eat or drink. Once recovery has occurred, oral herpes or fever blisters can return to the form of fever blisters on some of his later years, while others were asleep forever without symptoms.


The first time a child gets oral herpes infection she was very sad, has a slight fever, complained of sore mouth and gums and do not eat or drink because of the pain when fluid or food in contact with the wound.

Parents will see small blisters in and around the mouth, palate, tongue and throat, which then become shallow, painful sores. These lesions may be accompanied by fever and swollen glands. Wounds will slowly get better skin and crust and heal. The entire episode lasted seven to 10 days. In severe cases the child may be suffering from severe dehydration during primary infection, which require admission to hospital and administration of fluids and nutrients intravenously.

Additional oral herpes flare at a later stage manifest only as a tingling sensation on the lips during one or two days followed by the development of typical fever blisters on the lips. Fever blisters are a group of small blisters on the lip caused by a reactivation of the herpes virus in individuals with primary infection as a child. Sometimes a society where there is little physical contact between individuals, some people can reach adulthood without experiencing primary infection with oral herpes.


Ideally, HSV 1 or 2 is prevented by stopping a child touching or kissing a person with fever blisters appear. However, in practice it is almost impossible for a person without symptoms can still transmit the virus.

Avoid sharing eating utensils, cups, especially if possible.

Exposure to sunlight triggers a recurrence of cold sore so many people, so use a high factor sun screen when outside.


If the illness is caught very early, during the period when the only symptom is a tingling sensation on the margins of the lips, then called the antiviral acyclovir ointment may be effective in preventing a full cold sore from developing.

However, individuals often fail to identify the steps and so nothing was done to prevent the infection. When the fever blister is formed, there is no cure, but the pain can be reduced by using ice over the area, simple painkillers such as paracetamol if necessary and any local anesthetic cream pharmacist recommends.

When to see your doctor

If you or your child develops a painful sore on crows, eyelids or complain about the pain in his own eyes when he has a cold sore, you should see a doctor immediately, as it may be eye herpes.

If cold sores are spacious and prevent you or your child from eating and drinking normally, you should see your doctor.

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