eruptive xanthoma

xanthoma eruptivum a benign skin tumor consisting of a group of small yellow to orange papules surrounded by a reddish halo, usually on the buttocks, posterior thighs, knees, or elbows. Onset is sudden; lesions may be intensely pruritic and may ulcerate. It is caused by high concentrations of plasma triglycerides, such as with a deficiency of lipoprotein lipase, uncontrolled diabetes mellitus, pancreatitis, or certain other conditions, and it usually disappears when the underlying condition is corrected. See also tuberoeruptive x. Called also diabetic x.

Eruptive xanthomas.