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What are the different types of acne lesions?

Dr. Mehmet Oz, MD
Cardiology (Cardiovascular Disease)
Acne can take many forms including white/blackheads, raised bumps known as papules, red bumps called pustules (due to white pus at the tip), and more serious forms such as nodules or cysts.

Following are the different types of acne lesions:

Comedo (whiteheads or blackheads) or papules. The comedo is the basic acne lesion, which is a plugged pore. If the plugged pore stays under the skin, it is called a closed comedo and forms a white bump or whitehead. Blackheads are comedos that open up and appear blackish on the surface of the skin. This black color is not due to dirt, but because the air reacts with the excess oil. Pustules or pimples. Pustules or pimples are acne lesions that contain pus and are red at the base. Nodules. These are more serious acne lesions. They lodge deeper in the skin, are painful, and can cause scarring. Cysts. Like nodules, these lesions are deep within in the skin, are painful, and are filled with pus, and can cause scarring.

This answer is based on source information from the National Women's Health Information Center.

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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.