Porphyria cutanea tarda (PCT)
Porphyria cutanea tarda may inherited (autosomal dominant) but is commonly an acquired disorder of porphyrin metabolism.
There is a deficiency in uroporphyrinogen decarboxylase (chromosome 1p34) which results in:
- bullous reaction to sunlight
- hyperpigmentation and scarring
- liver disease
Porphyria cutanea tarda usually presents in middle and old age.
Reference
- Karim Z, Lyoumi S, Nicolas G, et al; Porphyrias: A 2015 update. Clin Res Hepatol Gastroenterol. 2015 Jul 1. pii: S2210-7401(15)00120-5.
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