<unk> s is a form of porphyria in which toxic porphyrin molecules build up in the liver.<unk> s can result from a number of different enzyme defiencies. Examples include (in order of synthesis pathway): * Acute intermittent porphyria * Porphyria cutanea tarda and Hepatoerythropoietic porphyria * Hereditary coproporphyria * Variegate porphyria
Hepatic porphyria
Variegate porphyria
Acute intermittent porphyria
Erythropoietic porphyria
Hepatoerythropoietic porphyria
Porphyria cutanea tarda
Porphyria
Harderoporphyria