porokeratosis linear porokeratosis GARD:0009515 MONDO:0023246 icd11.foundation:1622319802 Linear porokeratosis is a rare skin condition characterized by streaks of reddish-brown patches surrounded by a ridge-like border.The patches usually develop in infants or young children, but they sometimes develop in adults. SCTID:238631008 Linear porokeratosis Linear Porokeratosis Zosteriform porokeratosis UMLS:C0302319 MEDGEN:81293 Congenital facial linear porokeratosis (type) Porokeratosis, Linear