Medically reviewed by Deeptej Singh, MD Nodular acne, or nodulocystic acne, is severe, inflammatory acne that causes acne nodules to form under your skin. These painful bumps can appear as ...

The types of acne are blackheads, whiteheads, pustules, papules, nodules, and cysts. A papule is a raised lesion that can fill with pus and become a pustule.

Acne can be troublesome, especially when you have a deep, painful pimple. These can often be caused by nodular or cystic acne which, unlike other forms of acne, such as whiteheads or blackheads ...