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 ...
Medically reviewed by Susan Bard, MD Boils are painful, pus-filled, and are caused by infections like Staphylococcus aureus.Cysts are painless, non-infectious growths filled with keratin or other ...
DEAR DR. ROACH: I've been having trouble with boils for a couple of years. Last year, my doctor told me that it was a staph infection. After about a week on the antibiotics he prescribed, I started to ...