<unk>  is an erythematous pigmentary disease involving the<unk> cles, characterized by a reddish-brown, sharply demarcated, symmetrical discoloration involving the preauricular and maxillary regions.
Erythromelanosis follicularis faciei et colli
Phakomatosis pigmentokeratotica
Riehl melanosis
Keratosis pilaris atrophicans
Ichthyosis bullosa of Siemens
Nodular lichen myxedematosus
Dermatosis papulosa nigra
Erythrokeratodermia variabilis