Keratoacanthoma arising in nevus comedonicus.

Nevus comedonicus is a benign hamartoma of the pilosebaceous unit and is considered as a rare subtype of epidermal nevus. It was first described in 1895. It manifests as a group of closely dilated follicular openings with dark keratin plugs resembling comedones.

Hand-foot syndrome and seborrheic dermatitis-like eruption induced by erlotinib.

Erlotinib is an epidermal growth factor receptor tyrosine kinase inhibitor that is responsible for several cutaneous side effects. We report a case of hand-foot syndrome associated with a papulo-pustular and seborrheic dermatitis-like eruption of the face in a 61-year-old patient treated with erlotinib for lung cancer.