X-linked reticulate pigmentary disorder (also known as "Familial cutaneous amyloidosis," "Partington amyloidosis," "Partington cutaneous amyloidosis," "Partington syndrome type II," "Reticulate pigmentary disorder", and "X-linked reticulate pigmentary disorder with systemic manifestations") is a cutaneous condition that has been described in adult women that had linear streaks of hyperpigmentation and in which male patients manifested a reticulated mottled brown pigmentation of the skin, which, on biopsy, demonstrated dermal deposits of amyloid...