History:

Keratoelastoidosis marginalis is a variant of solar elastosis incited by long-term ultraviolet radiation exposure and chronic trauma secondary to manual labor.  The differential includes focal acral hyperkeratosis and acrokeratoelastoidosis. Ref: Mengesha YM et al. Keratoelastoidosis marginalis.  Cutan Med Surg. 2002 Jan-Feb;6(1):23-5. Epub 2002 Jan 9.