porphyria

(por-fir′ē-ă)

To hear audio pronunciation of this topic, purchase a subscription or log in.

[porphyro- + -ia]
A group of disorders that result from a disturbance in any of the sequential steps involved in the synthesis of heme, causing increased formation and excretion of porphyrin or its precursors.

There's more to see -- the rest of this topic is available only to subscribers.