This invention relates to compositions and methods of treatment of skin or mucosal disorders by administration of compositions comprising at least one EGFR inhibitor, such as topical compositions comprising erlotinib. The compositions of this invention are useful for the treatment, prevention or amelioration of skin or mucosal disorders like psoriasis, palmoplantar psoriasis, acquired palmoplantar keratosis, eczema, ichtyosis vulgaris, non-melanoma skin cancer, actinic keratosis, a keratinization skin disorder, a keratinization mucosal disorder, pachyonychia congenita, hidradenitis suppurativa, Gorlin syndrome, prurigo nodularis and prurigo pigmentosa.
