Causes, Symptoms and Treatments for Fever Blisters

Fever blisters can be easily identified as clusters of tiny sores or blisters on the lips or within the area of the mouth. Both adults and children can acquire the condition and this could be transmitted through direct physical contact with an infected individual. In children, the condition usually spread when they accidentally or intentionally rub the blusters using their hand and touching other children or playmates with the same hand. In adults, the condition is usually acquired through kissing or sexual intercourse.

Fever Blisters Causes and Symptoms

Fever blisters usually occur on the lips as a result of an infection by the herpes simplex virus. This is also referred to as oral herpes since the virus usually attack the wet membranes within the area of the mouth. Most people are exposed to herpes simplex virus type I for the first time during their childhood and this is considered as the primary infection. During this time, no symptoms are observed but following a week after the viral attack, various symptoms will start to show up. These symptoms include headache, fever, nausea and vomiting, sore throat and the presence of open and painful sores on the lips, inside the mouth and the gums.

When the primary infection has subsided, the virus will stay dormant in the roots of the nerves within the infected area. Some other factors that can activate the virus include a weakened immune system due to certain diseases like AIDS or cancer, trauma on the lips, malnutrition, and exposure to ultraviolet radiation, stress and hormonal changes. Whenever the virus is activated, new blisters will erupt and this often occurs on the outer areas of the lips. The early manifestations that are usually observed prior to the outbreak include the mild sense of tingling, itching or burning on the infected area. The lips will then turn red and after a maximum of two days, blisters will start to surface in clusters. These blisters will break open later on and release its fluid contents. In case the infection is worsened, more blisters will emerge and this will start forming an ulcer inside the mouth, the palate or the roof of the mouth and gums.

Cures for Fever Blisters

No treatment exists for the herpes simplex simplex virus that causes the development of fever blisters. However, there are available fever blisters or cold sore home remedies and medications that can help you cure the blisters. These include the following:

Antiviral Medicines

Fever blisters, as stated, are due to the herpes simplex virus. Therefore, the consumption of oral antiviral medicines can help control the infection and provide relief from pain and swelling. To obtain the best results, these antiviral medications should be consumed during the initial stage of the condition.


Aside from oral medicines, fever blister or cold sore on lip can be dealt with using topical creams that contain zinc. Zinc-containing creams should be applied on the infected area several times within the day to rip its benefits. Based on a research, zinc also has the ability to prevent outbreaks from recurring in the future.


Aromatherapy is another popular remedy against fever blisters or oral herpes. Essential oils, such as rose oil and lavender oil are helpful in relieving the painful symptoms of the condition. Lemon balm and chamomile can also be used for the same purpose. You can mix these essential oils with jojoba oil and apply it on the infected area at least three to five times daily.

Home Remedies

Since you already know what is a cold sore and what causes cold sores, then you should already be aware of the possible remedies for it. One effective home remedy for the condition is tannic acid that can be obtained from tea. This has natural antiviral properties that can help minimize the occurrence of fever blisters, as well as its size. To rip its benefits, simply apply a damp tea bag directly on the lip or any affected area for at least 10 minutes and repeat the procedure three to four times a day. Aloe vera extracts can also work wonders against fever blisters or cold sores. This can be applied three times a day for five consecutive days for better results.

Fever blisters or cold sores on the lips due to primary infection are considered more severe than its occurrence in the future. Primary eruptions of fever blisters usually take more than two weeks to heal while recurring outbreaks will only take eight to 10 days. It was also reported that the frequency of fever blister outbreaks decreases by the time the individual reaches the age of 35. However, for severe cases of fever blisters or cold sores or for frequent outbreaks, a consultation with your health care provider is necessary to determine the right treatment for the problem and to reduce the frequency of outbreaks in the future.


2 Responses so far.

  1. Tess says:

    Is it called fever blisters because of the symptoms associated. It seems like you’re having a fever. When my daughter get cold sores, we expect that she’ll have fever soon after. Why is that?

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