Acne is an inflammatory disorder of the skin, which has sebaceous (oil) glands that connects to the hair follicle, which contains a fine hair. In healthy skin, the sebaceous glands make sebum …

Diagnosis of Acne To diagnose acne, health care providers may: Ask about your family history, and, for girls or women, ask about their menstrual cycles. Ask you about your symptoms, …

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.

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.

Jun 26, 2024 · Learn about acne, including how it is diagnosed and treated, and the steps you can take to help prevent outbreaks.

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.

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

Jun 9, 2025 · NIAMS offers science-based classroom materials and activities for teachers to build accurate, age-appropriate lesson plans about skin for students in grades 4, 5, and 6.

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

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.