What is Cold Sores?

Cold sores or Herpes Simplex is a disease caused by the two viruses, HSV-1 or type 1 herpes simplex virus and HSV-2 or type 2 herpes simplex virus. The condition is called fever blisters or cold sores and affects the face and the mouth. The most prevalent of such infection is oral herpes or cold sores. 

A cold sore is cyclical in nature. Cold sores begin with periods of disease that appears as blisters consisting of particles of virus infection that lasts anywhere between 2 to 21 days. Then comes the remission period when the cold sores tend to vanish. After the primary infection the virus turns to the sensory nerves to remain there dormant for the rest of its lifetime. Causes of the recurrence of the symptoms of Herpes Simplex are not certain, although scientists have identified some possible triggers. As time passes, instances of active disease slow down in severity as well as frequency.