Cystic Acne
Cystic Acne Defined
Cystic acne is a type of inflammatory acne that causes painful, pus-filled pimples to form deep under the skin. Acne occurs when oil and dead skin cells clog skin pores. With cystic acne, bacteria also gets into the pores, causing swelling or inflammation. Cystic acne is the most severe type of acne.