Linear focal elastosis associated with exercise

PXE: pseudoxanthoma elasticum INTRODUCTION Linear focal elastosis (also known as elastotic striae) is a rare, acquired disorder of increased elastic tissue in the skin. Initially believed to be limited to elderly white men, this condition has since been reported in women, children, and patients from a variety of ethnic backgrounds. The possibility of inherited susceptibility has been suggested by cases with positive familial associations. However, little is known about the pathogenesis of this condition or the events that trigger its development. Here, we present the interesting case of an elderly man in whom linear focal elastosis developed on the midupper and lower back 1 year after beginning a rigorous, indoor swimming exercise program.