How does an acne lesion form?

Dr. Mehmet Oz, MD
Cardiology (Cardiovascular Disease)
Acne lesions form when too much sebum (oil), dead skin cells, and bacteria clog your pores. There are several types of acne lesions:
  • Whiteheads and blackheads are referred to as comedones, or clogged pores. Whiteheads are closed comedones when they stay under your skin and form white bump. Blackheads are open comedones when the clogged pore remains open at the surface and looks black.
  • Pimples are raised acne lesions that contain pus and are red.
  • Nodules are serious acne lesions that remain very deep under the skin. They are usually painful and may cause scars.
  • Cysts are lodged deep under the skin and are filled with pus. They are usually painful and may cause scars.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.