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  1. Acne Types, Causes, & Risk Factors | NIAMS

    Acne is a common skin disorder that results in blocked skin follicles. Learn the types & causes of acne.

  2. Acne: Diagnosis, Treatment, and Steps to Take

    Acne is a common skin disorder that results in blocked skin follicles. Learn the types & causes of acne.

  3. Skin Diseases, Conditions, & Disorders | NIAMS

    Jun 5, 2025 · Find information on diagnosis, treatment, and prevention for skin conditions caused by allergies, irritants, genetic makeup, certain diseases, immune system problems and more.

  4. Psoriasis Symptoms, Causes, & Risk Factors | NIAMS

    Psoriasis is a chronic autoimmune skin disease where patches of skin become red & scaly. Learn more about the types, symptoms,& possible causes of psoriasis.

  5. Acne: Research & Resources

    Acne is a common skin disorder that results in blocked skin follicles. Learn the types & causes of acne.

  6. Rosacea Symptoms, Causes, & Risk Factors | NIAMS

    Rosacea is a long-term skin condition that causes reddened skin and a rash, usually on the nose and cheeks. Learn symptoms and possible causes.

  7. Hidradenitis Suppurativa Symptoms & Risk Factors | NIAMS

    Hidradenitis suppurativa (also known as acne inversa) is a chronic, noncontagious, inflammatory condition characterized by pimple-like bumps or boils and tunnels or tracts on and under the skin.

  8. Ichthyosis Symptoms, Types, Causes, & Risk Factors | NIAMS

    Ichthyosis refers to a group of skin disorders that lead to dry, itchy skin that appears scaly, rough, and red. The symptoms can range from mild to severe.

  9. All Diseases and Conditions | NIAMS

    Jun 5, 2025 · Acne What is acne? It is caused when blocked skin follicles from a plug caused by oil from glands, bacteria, and dead cells clump together and swell.

  10. Health Topics | NIAMS

    Jun 6, 2025 · Find information on diagnosis, treatment, and prevention for a range of health conditions related to arthritis, musculoskeletal, and skin diseases.