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 boil is a skin infection that is usually caused by the bacteria Staphylococcus aureus (staph). A carbuncle is a group of boils located in one area of the body. If left alone, a boil will break and drain on its own over time; in certain cases, a doctor may need to cut into the skin to drain the pus.