The porphyrias have several different classification systems. The most accurate classification is by the specific enzyme deficiency. Another classification system distinguishes porphyrias that cause ...

If you've spent the last week binging "Queen Charlotte: A Bridgerton Story" you're likely well-versed in the complicated (and steamy!) love between Queen Charlotte and King George III. But this high ...

Patients with porphyria cutanea tarda have more cutaneous lesions in summer than in winter, but only after prolonged and chronic exposure to light. Some patients excrete red, fluorescent urine during ...

Variegate porphyria (VP) is an autosomal dominant condition that results from the deficiency of protoporphyrinogen oxidase (PPOX, EC 1.3). The build-up of porphyrin precursors delta-aminolevulinic ...

Sue Burrell no longer has severe bouts of pain. Doctors have used a new type of medicine called "gene silencing" to reverse a disease that leaves people in crippling pain. The condition, acute ...