TY - CHAP M1 - Book, Section TI - Porphyria Cutanea Tarda A1 - Hardin, J. Matthew A2 - Knoop, Kevin J. A2 - Stack, Lawrence B. A2 - Storrow, Alan B. A2 - Thurman, R. Jason PY - 2021 T2 - The Atlas of Emergency Medicine, 5e AB - Porphyrias are associated with enzymatic defects in heme biosynthesis. Porphyria cutanea tarda (PCT) is the most common type. Patients have photosensitivity, skin fragility, and characteristic lesions on sun-exposed sites (most common on the dorsal hands and forearms). Typically, the skin is easily traumatized with blisters, erosions, superficial scars, milia, and hypertrichosis. PCT does not cause the life-threatening neurologic attacks associated with the acute porphyrias. SN - PB - McGraw-Hill CY - New York, NY Y2 - 2024/11/05 UR - accessemergencymedicine.mhmedical.com/content.aspx?aid=1181044200 ER -