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 » 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 » Health Conditions & Diseases

Blood blisters may form anywhere on the body, including the lips, due to small blood vessels becoming damaged, according to WebMD. Most blisters, including blood blisters, are easily treated at home or heal on their own. More » Health Conditions & Diseases Skin Conditions
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Some causes of lesions, such as sores or blisters, on the head include allergies, fungal infections, viral infections and acne, states WebMD. Cysts that form around hair shafts can become infected and cause lesions. Skin... More » Health Conditions & Diseases Skin Conditions