In eight cases of linear porokeratosis, the skin lesions appeared most commonly over the extremities during childhood and were clinically mistaken for linear verrucous epidermal nevus or lichen striatus. In a review of the literature, only seven instances of linear porokeratosis were found. We believe that linear porokeratosis should be recognized as a distinctive clinical variant and that the condition should be taken into consideration in the differential diagnosis of linear keratotic cutaneous eruptions.
Rahbari H, Cordero AA, Mehregan AH. Linear Porokeratosis: A Distinctive Clinical Variant of Porokeratosis of Mibelli. Arch Dermatol. 1974;109(4):526–528. doi:10.1001/archderm.1974.01630040036007
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