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OVERVIEW Have you ever heard of opportunistic infections (OIs)? They are caused by germs that generally cannot cause problems if your immune system works properly. However, these germs can cause serious health problems in people whose immune systems are weak. Candidiasis is an opportunistic infection

OVERVIEW A boil, also known as a furuncle, is a localized skin infection characterized by a red, tender bump. The spot tends to grow in size, filling with pus and becoming more painful quickly. Over time, the boil can develop a pustule (whitehead) and drain. When it drains, the boil might leave a small,