seborrheic dermatitis

noun

: a red, scaly, itchy dermatitis chiefly affecting areas (as of the face, scalp, or chest) with many large sebaceous glands

Topical antifungal agents are the mainstay of treatment of seborrheic dermatitis.

—Luigi Naldi et al., The New England Journal of Medicine

Seborrheic dermatitis—overstimulation of the oil glands, which results in dandruff and dry patches on your face—is often a chronic condition that may also show up on your scalp.

—Corynne Corbett, Essence