Cold sores or canker sores ?

There is some confusion about the differances of cold sores and canker sores.Cold sores or fever blisters are caused the herpes simplex virus that develop on the lips or inside the mouth. The virus remains present for life.
Canker sores on the other hand are caused by a variety of conditions that can initate a canker sore. These conditions can include injury due to a jagged tooth;low resistance due to some illness or from fatigue; emotional stress or deficiencies of vitamin B12,folic acid,and iron.