What is it?

Porphyria is a group of disorders in which the chemical porphyrin builds up in the body. Normally, porphyrin binds iron and carries oxygen to the organs and tissues. High levels of porphyrin may affect the skin and nervous system. There are two types of porphyria- acute and cutaneous types. Porphyria cutanea tarda (PTC) is the most common acquired (cutaneous) form. It may be caused due to genetic enzyme deficiency, too much iron, liver disease, estrogen medications, smoking or excessive alcohol use.