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.
Causes of boils. In most cases boils are brought on by contamination of the hair follicles. This is caused by a type of bacteria, known as Staphylococcus aureus or staph, which lives on the surface of the skin.Bacteria are able to penetrate the follicles if there is a tiny cut in the skin and they can then cause an infection. boil is a skin condition which occurs due to a build-up of dead tissue and pus in a specific area under the skin. In most cases boils are brought on by inflammation of the hair follicles.