Toxicodendron radicans, commonly known as eastern poison ivy or poison ivy, is a poisonous Asian and North American flowering plant that is well known for causing an itching, irritating, and sometimes painful rash in most people who touch it, caused by urushiol, a clear liquid compound in the plant's sap.
Boil: Introduction. A boil is a large infection of a hair follicle, the tiny opening in the skin from which a hair grows. Boils are due to an invasion of bacteria that enter the follicle and cause a bacterial infection of the follicle and nearby skin. Boils are also called skin abscesses or furuncles.
A. Boils themselves are not contagious, but the bacteria that cause boils are. Boils are skin infections, commonly caused by the bacteria in the family staphylococcus or by other bacteria.The bacteria manage to temporarily evade the bodyâs defenses and grow in a tightly defined area.Small boils often go away without treatment.. Boils themselves are not contagious, but the bacteria that cause boils are. Boils are skin infections, commonly caused by the bacteria in the family staphylococcus or by other bacteria.