What are subtypes of keratoacanthoma (KA)?

Updated: Jan 30, 2020
  • Author: Ginard I Henry, MD; Chief Editor: Gregory Gary Caputy, MD, PhD, FICS  more...
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Numerous subtypes have been described. Generalized eruptive keratoacanthomas (of Gryzbowski) present with multiple nonregressing keratoacanthomas. Multiple regressing keratoacanthomas of Ferguson-Smith is an autosomal dominant condition, where multiple spontaneous regressing keratoacanthomas appear in patients aged 20-30 years. When the nodules developin sun-exposed skin associated with actinic keratoses, they can be referred to as actinic keratoacanthomas. Keratoacanthoma centrifugum marginatum is characterized by multiple grouped keratoacanthomas. Giant and subugual variants have also been described.

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