Abstract
A 71-year-old woman presented with a one-month history of pruritus, burning, flaky, and erythematous plaques. The lesions had a very narrow lineal distribution, extending from the lateral left sole to the left popliteal region. Microscopically, the skin biopsy sample revealed orthokeratosis, parakeratosis and traumatized Koebnerization. Elongation of rete ridges was not prominent. The patient had a good clinical response to oral prednisone. Linear psoriasis is a rare variant of psoriasis of unknown etiology. Approximately 23 reports have been published in the English literature. The main differential diagnosis is Inflammatory linear verrucous epidermal nevus (ILVEN). Thorough clinicopathologic findings and response to treatment are all required in the diagnosis and management of this rare form of psoriasis.
Highlights
A 71-year-old woman presented with a one-month history of pruritus, burning, flaky, and erythematous plaques
A 71-year-old woman presented to the clinic with a one-month history of pruritic, burning, flaky pink to dark red erythematous plaques
The right leg had a similar erythematous plaque located at the pretibial region
Summary
Chun-Hui Yi MD PhDa, Chen Chen MDb, Allen N Sapadin MD JDc, Robert G Phelps MDb aDepartment of Pathology, Mount Sinai Health System, St. Luke’s-Roosevelt Hospital and Beth Israel Medical Center, New York, NY bDepartment of Pathology, Mount Sinai School of Medicine, New York, NY cAllen Sapadin Dermatology and Dermatologic Surgery, Hackensack, NJ
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