Colleen Murphy is a senior editor at Health. She has extensive experience with interviewing healthcare providers, deciphering medical research, and writing and editing health articles in an ...

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 ...

Consult a licensed health care professional if you have used these products and have health concerns. Do not buy or use unauthorized drugs. Only buy prescription drugs from licensed pharmacies.