Porphyria is a group of disorders. The disorders lead to a buildup of porphyrins in the body. Porphyrins help to make a part of the red blood cell. Excess amounts of porphyrins can cause damage to your body. It most often affects the nervous system and skin.

Hemoglobin Transporting Oxygen
Hemoglobin - anemia
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Some porphyria disorders include:

  • Acute intermittent porphyria
  • Porphyria cutanea tarda
  • Erythropoietic protoporphyria
  • Congenital erythropoietic protoporphyria—present from birth

Most types of porphyrias are inherited through genes. They may be passed on by one or both parents.