I, too, was aware that in 1978 about 900 members of the Peopleâs Temple living at Jonestown in Guyana took their own lives with a concoction of grape Flavor-Aid, Valium, Phenergan and cyanide.
Both cold sore and fever blister refer to the lip blisters caused by infections of the Herpes Simplex I virus (not to be confused with Herpes Simplex II, which is generally associated with genital herpes). Cold Sores are viral infections which cause recurrent groups of irritating, even painful blisters on the lips. The Herpes Simplex I virus affects more than half of the adult population, and over 50 million people in the US experience at least one cold sore outbreak per year.
Cold sores or fever blisters are caused by the herpes simplex virus and are usually relatively easy to identify. To view pictures of the herpes virus (including cold sores and mouth herpes) visit our Herpes Pictures page. There is another condition which can cause ulcers inside the mouth known as Canker sores.