Porphyria Cutanea Tarda (PCT) is a type of porphyria, a group of rare metabolic disorders caused by deficiencies in enzymes involved in the heme biosynthesis pathway. PCT is the most common form of porphyria and is characterized by photosensitivity leading to blistering, fragility, and scarring of the skin. This disorder primarily affects the skin but can have systemic implications.
