Perioral dermatitis (periorificial dermatitis, syn.: idiopathic dermatitis of the face, steroid dermatitis of the face, flight attendant disease, perioral rosacea, rosacea-like dermatitis, photosensitive seborrhea) is a disease that affects exclusively the skin of the face and is manifested by persistent erythema, most often developing in the perioral area, and small papules and papulopustules that appear against its background.