Cold sores, also called fever blisters, are usually cause by a virus called the HSV1 virus. This is the herpes simplex virus type one. It usually causes outbreaks on the mouth, lips or face. Certain stressors such as fever, illness, menstruation and sun exposure may trigger the outbreak of a cold sore.
Blisters
You may notice small, red, fluid-filled blisters in a cluster on your mouth, lips or face. These blisters may last up to seven to 10 days. These blisters are contagious. Do not share glassware or utensils with anybody. Kissing and oral sex may also pass the virus to your partner. Abstain from oral contact until the blisters are completely healed.
Pain and Burning
Even before you notice the eruption of a cold sore, you may feel pain, tingling and burning in the area. If you know a cold sore is on the way, an over-the-counter medication such as Abreva may be helpful. Once the sore begins to develop, pain and burning may increase.
Redness and Irritation
You may notice redness and irritation in the area surrounding your cold sore. Topical symptomatic treatments include lidocaine or benzyl alcohol (Zilactin). These medications may help to relieve your symptoms. Some doctors may prescribe an anti-viral medication such as Valtrex to help shorten the duration of your cold sore.
