Acute porphyrias 1 Cutaneous porphyries 1 Enzymes 1 Heam 1 Porphyrias 1 adolescent 1 adult 1 article 1 autosomal dominant disorder 1 cefalexin 1 ceftriaxone 1 child 1 clinical article 1 controlled study 1 coproporphyria 1 differential diagnosis 1 disease severity 1 enzyme deficiency 1 erythropoietic protoporphyria 1 gene mutation 1 gentamicin 1 human 1 phenobarbital 1 porphyria 1 porphyria cutanea tarda 1 risk factor 1 valproic acid 1