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.
Cold sores and fever blisters are caused by herpes simplex virus type 1 (HSV-1). This virus is passed from person to person by saliva (either directly, or by drinking from the same glass or cup) or by skin contact. Cold sores usually appear as clusters of tiny blisters on the lip. About 8 out of 10 people have the virus that causes cold sores. Most people are first infected before they are 10 years old. After this first infection, the virus remains dormant (inactive) in the nerves of the face. In some people, the virus becomes active again from time to time.