Boils are painful, pus-filled, and are caused by infections like Staphylococcus aureus. Cysts are painless, non-infectious growths filled with keratin or other substances. Antibiotics may treat boils ...

An infected nose piercing may cause pain, pus, and an abnormal odor at the piercing site. You can use home remedies like a sea salt solution or a warm compress to combat the infection. To prevent ...