Linear porokeratosis associated with Bardet‐Biedl syndrome: A case report

This case report presents a 17‐year‐old boy with Bardet‐Biedl syndrome ( BBS ) and a long‐standing hyperpigmented eruption on the left trunk and upper extremity, clinically and histologically consistent with linear porokeratosis ( LP ). BBS patients frequently require solid organ transplant, and subsequent immunosuppression places them at especially high risk for malignant transformation of premalignant skin lesions such as LP . Although BBS affects multiple organ systems, there are only a handful of case reports detailing associated cutaneous involvement, and, to our knowledge, this is the first reported case of linear porokeratosis occurring in patient with BBS .