Periodic dermatitis (periorificial dermatitis, syn: idiopathic face dermatitis, steroid face dermatitis, stewardess disease, rosacea perioral, rosace-like dermatitis, photosensitive seborrhea) is a disease that affects exclusively the skin of the face and manifests itself as persistent erythema, most often developing in the perioral region, and emerging on its background with small papules and papulopustules.