Bilateral Linear Porokeratosis Treated With Topical Cholesterol 2%/Lovastatin 2.

Linear porokeratosis is a cutaneous disorder that typically presents in a unilateral linear formation. While the exact cause of linear porokeratosis is unknown, it is thought to be a downstream effect of disrupted cholesterol synthesis and mevalonate accumulation. Our patient is a 61-year-old male with an unusual case presentation of bilateral linear porokeratosis. He had failed numerous standard therapies. Pathologic examination of a skin biopsy was consistent with bilateral linear porokeratosis. Through a PubMed search, there have been limited reported cases of unilateral linear porokeratosis, but there have not been any reported cases of bilateral linear porokeratosis. There are currently limited therapies with satisfactory outcomes for variants of porokeratosis. While there are some studies on the topical application of cholesterol/lovastatin, limited studies have been performed on the linear form. Our study evaluates the efficacy of compounded topical cholesterol 2%/lovastatin 2% ointment on bilateral linear porokeratosis. The patient demonstrated a significant reduction of porokeratotic lesions on the treated arm compared to the untreated arm. Cholesterol/lovastatin is alternative therapy that can be considered in the treatment of linear porokeratosis and other porokeratosis variants.

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The authors have declared that no competing interests exist.