Cold sore is also called as herpes labialis or fever blister is common viral infection. It is tiny, fluid-filled blister on the lip and around the mouth. This blister grouped together in patches. They cause pain, itching or burning sensation before they burst and crust over. This score appears on the lips, cheeks, inside the nostril and chin. The skin around the blister becomes reddish, sore and swollen. The blister may break, open, leak a clear fluid, and then scrub over after few days. It takes several days to 2 weeks to heal. It spread rapidly from person to person by close contact such as kissing. They caused by a herpes simplex virus (HSV-1) closely related to one that cause genital herpes (HSV-2). Both these virus can affect your mouth and spread by oral sex.
Symptom-
Sign and symptoms of cold sore are as follows
• Swollen and sensitive gum of deep red color.
• Lip swelling
• Nausea
• Dehydration
• Mouth ulcers
• Blister in the mouth
• Tongue pain
• Mouth lesions
• Sore throat
• Tingling
• Itching
• Oozing and crusting
• Fever
• Headache
• Muscles aches
Cause- …show more content…
There are two types of herpes simplex virus: HSV-1 and HSV-2. Both the virus cause sore around mouth and on the genilals. This virus enters into the mouth through a break inside the mouth or in the skin. This virus spreads rapidly when person touches a sore and also spreads to other part of body. The infection from cold sore may cause meningitis if it spreads to brain and blindness if it spreads to eye. Sharing eating utensils and bathroom items may spread the infection. This virus makes its mode to the nerves and lies there dormant till some trigger activates on it. The following trigger activates the