Medically reviewed by Susan Bard, MD Boils are painful, pus-filled, and are caused by infections like Staphylococcus ...
There are acne cysts, arachnoid cysts, Baker’s cysts (or popliteal cyst), Bartholin’s cysts, breast cysts, chalazion cysts, colloid cysts, dentigerous cysts, dermoid cysts, epididymal cysts, ganglion ...