PMC4809442_01
A, Linear hyperpigmented atrophic patches on the right upper inner arm, right side of the upper chest, right thigh and right leg following Blaschko's lines. B, Close-up view of the atrophic patches on right thigh.
gr1.jpg
PMC4809442_01_gr1.jpg
fig1
Physical examination found linear hyperpigmented atrophic patches on the right arm, right trunk extending down to the right buttock, right thigh, and right leg following Blaschko's lines involving both anterior and posterior aspects (Fig 1, A). No signs of induration or inflammation were noted (Fig 1, B).
A, Histopathology of the normal skin. B, Histopathologic examination of the affected skin found reduced dermal thickness with more compact dermal collagen and mild upper dermal perivascular lymphocytic infiltration. (Hematoxylin-eosin stain; original magnification: x40.)
gr2.jpg
PMC4809442_01_gr2.jpg
fig2
Skin biopsy was repeated from normal skin (Fig 2, A) and from the hyperpigmented patch (Fig 2, B) on the right arm.