Cold sore will start as a little hard area beneath the skin of your lip. The in a few days you have small cluster of tiny harmless looking white blisters that quickly explode into a painful and unsightly sore. Cold sores also called fever blisters are caused by the herpes simplex virus type 1.
Cold sores can be activated by contact,phtsical stress,anxietyor excessive exposure to the sun. It will have cluster of tiny painful blister son the lip and can last seven to fourteen days. Unlike cold sores, canker sores are bacterial infections inside the mouth. Cold sore are highly contagious canker sores are not.
Coating the sore with petroleum jelly will speed the healing and protect from spreading. Cold sores can be painful you can check with your doctor for pain medications to help reduce the amount of pain. Avoid salty or acidic foods. Salt coated foods like potato chips, French fries, and pretzels will irritate a cold sore. The acidic juices of citrus fruits can do the same. You can use a local anesthetic like benzocaine on the cold sore. If you are going out in the sun make sure to apply a sun screen to the area of the cold sore. Cold sores are extremely contagious. You need to avoid kissing don't share cups, towels, utensils and wash your hand frequently especially after touching the sore.