keratoacanthoma generalized eruptive keratoacanthoma https://www.malacards.org/card/generalized_eruptive_keratoacanthoma MEDGEN:577226 Orphanet:411777 SCTID:254664008 UMLS:C0345985 MONDO:0018471 GARD:0021736 Grzybowski syndrome GEKA generalised eruptive keratoacanthomas of Grzybowski generalized eruptive keratoacanthomas of Grzybowski Generalized eruptive keratoacanthoma (GEKA) is rare variant of keratoacanthoma (KA) that affects the skin and mucous membranes and which is characterized by a sudden generalized eruption of severely pruritic, hundreds to thousands of small follicular papules, often with a central keratotic plug. obsolete rare skin tumor or hamartoma