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Arch Dermatol. 2009;145(9):1053-1058.

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Diagnosis: Lichen striatus.

MICROSCOPIC FINDINGS AND CLINICAL COURSE

Histologic sections of the hematoxylin-eosin–stained biopsy specimen showed an acanthotic epidermis with overlying orthokeratosis and parakeratosis. A dense lichenoid infiltrate was associated with epidermal basal vacuolar changes and scattered apoptotic keratinocytes. There was also a superficial and deep perivascular and perieccrine lymphohistiocytic infiltrate. A periodic acid–Schiff stain failed to reveal fungal organisms. The combined histologic findings and clinical appearance was that of lichen striatus.

DISCUSSION

Lichen striatus is an uncommon, self-limited, linear eruption that most commonly occurs in children between the ages of 3 and 5 years, although it has rarely been reported in infants and adults. There is a female preponderance of approximately 3:1.¹ The lesions are linear, pruritic plaques composed of pink, red, or flesh-colored, flat-topped scaly papules. The lesions may follow the lines of Blaschko or pigmentary demarcation lines (Voigt lines).² The lower extremities are the most commonly involved site. Other reported sites include the upper extremities, trunk, . . . [Full Text of this Article]

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Arch Dermatol. 2009;145(9):1053-1058.
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