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Lip blisters, medically known as cold sores or fever blisters, are caused by the herpes simplex virus, according to WebMD. There are two types of herpes simplex virus: HSV-1 and HSV2. Both types of this virus can cause c... More »

www.reference.com Health Conditions & Diseases Skin Conditions

Fever blisters that occur on and around the lips are caused by the herpes simplex virus, according to WebMD. There are two types of the herpes simplex virus that can cause sores on the mouth and genitals: HSV-1 and HSV-2... More »

www.reference.com Health Pain & Symptoms

Cold sores or blisters on the lip and mouth are caused by the herpes simplex virus, according to WebMD. The virus enters the body through the mouth or a break in the skin via infected fluid. More »

www.reference.com Health Conditions & Diseases
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Foods do not cause fever blisters; fever blisters are caused by the herpes simplex virus. However, acidic or spicy foods can exacerbate fever blister discomfort and should be avoided during a breakout in order to minimiz... More »

www.reference.com Health Conditions & Diseases Skin Conditions

Cold sores or blisters on the lip and mouth are caused by the herpes simplex virus, according to WebMD. The virus enters the body through the mouth or a break in the skin via infected fluid. More »

www.reference.com Health Conditions & Diseases

Cold sores form on lips because of an infection by the herpes simplex virus, which gets into the body through a cut or scratch in the mouth or nearby skin, WebMD states. Contact with a cold sore or with HSV-infected flui... More »

www.reference.com Health Conditions & Diseases Skin Conditions

Treatments for lip blisters, or cold sores, include applying topical medications, taking oral pills, using medicated mouthwash and fortifying the diet with supplements and vitamins such as vitamin C, which helps build th... More »

www.reference.com Health Conditions & Diseases Skin Conditions