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 ...

Katlein Franca, MD, is a dermatologist and clinical associate professor of Dermatology & Cutaneous Surgery and Psychiatry & Behavioral Sciences at the University of Miami. Boils start as tender bumps ...

Hidradenitis suppurativa (HS) is an inflammatory skin condition that causes painful lumps under the skin that may burst, scar, and form tunnels. Early HS is often misdiagnosed as acne vulgaris, cysts, ...

Incomplete sealing of the urachus — a line of connectivity between a fetus and the umbilical cord — can cause a urachal cyst to develop. It can lead to abdominal pain and other symptoms and often ...

What Is a Dentigerous Cyst? A dentigerous cyst, also called a follicular cyst, is the second most common type of jaw (odontogenic) cyst. It's a fluid-filled sac that develops in your jawbone over a ...

Bartholin cysts are common fluid-filled lumps that form near the opening of your vagina. When infected, they can become abscesses, which can have more severe symptoms and require different treatments.