medlineplus.gov/ency/article/001474.htm Boils Boils: MedlinePlus Medical Encyclopedia https://medlineplus.gov/ency/article/001474.htm MedlinePlus: Furuncle https://medlineplus.gov/ency/article/001474.htm MDP "Boils." Furuncle MedlinePlus: Furuncle MedlinePlus: Furuncle MedlinePlus: Furuncle medlineplus.gov/ency/article/001474.htm medlineplus.gov/ency/article/001474.htm medlineplus.gov/ency/article/001474.htm furuncles medlineplus.gov/ency/article/001474.htm medlineplus.gov/ency/article/001474.htm treat