Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
A furuncle, also known as a boil, is a painful, pus-filled bump under the skin caused by bacterial infection, typically Staphylococcus aureus. They develop when bacteria infect hair follicles or oil glands.
5 Must Know Facts For Your Next Test
Furuncles usually begin as red, tender areas that become firm and hard over time.
Staphylococcus aureus is the most common causative agent of furuncles.
Furuncles can sometimes develop into more severe infections like carbuncles if multiple hair follicles are involved.
Poor hygiene, diabetes, immune deficiencies, and close contact with another person who has a staph infection increase the risk of developing furuncles.
Treatment typically involves drainage of the abscess and antibiotics to clear the infection.
Review Questions
Related terms
Carbuncle: A cluster of interconnected furuncles that form a larger mass deeper under the skin.