Andrew Johnson 17th U.S. President About President Johnson: He was a self-educated man of humble origin who was Abraham Lincoln's vice president during his second term and became President upon the assassination of Lincoln in April of 1865. Born to a poor family in Raleigh, North Carolina, as a boy Johnson never attended school.
Fever blisters, also called cold sores, usually occur outside the mouth--on the lips, chin, cheeks or in the nostrils. When fever blisters do occur inside the mouth, it is usually on the gums or the roof of the mouth. Inside the mouth, fever blisters are smaller than canker sores, heal more quickly, and often begin as a blister. Both canker sores and fever blisters have plagued mankind for thousands of years.
Caused by herpes simplex virus 1 (HSV-1), fever blisters are red, swollen sores that become filled with fluid, then open and form a crust as healing begins. Up to two days before the physical appearance of a fever blister, tingling, burning or itching may be felt on the inside or outside of the mouth or nose.