Define tranche. tranche synonyms, tranche pronunciation, tranche translation, English dictionary definition of tranche. n. 1. A portion of a total, especially of a block of assets such as cash or securities: the riskiest tranche of the bond offering; money delivered in two...
A boil is a red, swollen, painful bump under the skin. It often looks like an overgrown pimple. Boils are often caused by infected hair follicles. Bacteria from the infection form an abscess, or pocket of pus. A boil can become large and cause severe pain. Boils most often happen where there is hair and rubbing. The face, neck, armpits, breasts, groin, and buttocks are common sites.
Abscess - Causes. Most abscesses are caused by an infection with staphylococcal bacteria. When bacteria enter the body, the immune system sends white blood cells to fight the infection. This causes swelling (inflammation) at the site of infection and the death of nearby tissue. A cavity is created, which fills with pus to form an abscess.