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J Am Acad Dermatol. 1993 Aug;29(2 Pt 2):299-304.

Generalized eruptive keratoacanthoma of Grzybowski.

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Department of Dermatology, University of Virginia School of Medicine.


A patient with generalized eruptive keratoacanthoma of Grzybowski is described. Our findings, along with those of the 21 reported cases from the world literature, are summarized. This rare variant of keratoacanthoma most commonly affects patients in the fifth to seventh decades of life and appears as a generalized eruption of hundreds to thousands of follicular papules. These small papules often have a keratotic center and demonstrate the microscopic features of keratoacanthoma. Marked facial involvement is characteristic and can lead to masked facies with ectropion. Severe pruritus, mucosal lesions, and koebnerization are features of the disease. The course is chronic and the response to therapy is poor, although a few patients have improved with the use of systemic retinoids.

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