Table 1.

Classifications and principal clinical features of each type of porphyria disease. Standard abbreviations are also shown.

Porphyria	Classification	Principal Clinical Features
Acute intermittent porphyria (AIP)	Hepatic; Acute	Neurological
Hereditary coproporphyria (HCP)	Hepatic; Acute & Cutaneous	Neurological; blistering photosensitivity (uncommon)
Variegate porphyria (VP)	Hepatic; Acute & Cutaneous	Neurological; blistering photosensitivity (common)
δ-Aminolevulinic acid dehydratase porphyria (ADP)	Hepatic; Acute	Neurological
Porphyria cutanea tarda (PCT)	Hepatic: Cutaneous	Blistering photosensitivity
Hepatoerythropoietic porphyria (HEP)	Hepatic: Cutaneous	Blistering photosensitivity
Congenital erythropoietic porphyria (CEP)	Erythropoietic; Cutaneous	Neurological
Erythropoietic Protoporphyria (EPP)	Erythropoietic; Cutaneous	Nonblistering photosensitivity
X-linked protoporphyria (XLP)	Erythropoietic; Cutaneous	Nonblistering photosensitivity