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PubMed This is a summary of 52 peer-reviewed journal articles Updated
Dermatology

Porphyria Cutanea Tarda (PCT) Resource Guide

At a Glance

Porphyria cutanea tarda (PCT) is a highly treatable metabolic disorder caused by a liver enzyme deficiency. It causes fragile, blistering skin on sun-exposed areas due to a buildup of porphyrins. Treatment typically involves phlebotomy, medications, and trigger management.

Welcome to the Porphyria Cutanea Tarda (PCT) Resource Guide.

Porphyria cutanea tarda (PCT) is a highly treatable, liver-based metabolic disorder characterized by fragile, blistering skin on sun-exposed areas. It is caused by a deficiency of an enzyme in the liver called UROD, which leads to an accumulation of light-sensitive compounds called porphyrins.

When you are first diagnosed, it is normal to feel overwhelmed, confused, or anxious. This guide is designed to help you understand your diagnosis, how to read your lab tests, and how to confidently navigate the highly effective treatments available.

Guide Contents

01

Understanding Porphyria Cutanea Tarda (PCT)

Learn what Porphyria Cutanea Tarda (PCT) is, its causes, and why it affects your skin and liver. Understand UROD enzyme deficiency, triggers, and symptoms.

02

Skin Changes and PCT Symptoms

Learn about the skin symptoms of Porphyria Cutanea Tarda (PCT), including blisters, extreme skin fragility, dark urine, and increased facial hair growth.

03

The Biology of PCT: Sporadic vs. Familial

Learn the difference between sporadic (Type 1) and familial (Type 2) Porphyria Cutanea Tarda (PCT). Understand UROD enzyme deficiency and common triggers.

04

Diagnosing PCT: Understanding Your Lab Tests

Learn how doctors diagnose Porphyria Cutanea Tarda (PCT). Understand your lab tests, the porphyrin fingerprint, HPLC, and why screening for triggers matters.

05

Treating PCT: Phlebotomy, Medications, and Trigger Management

Learn the standard treatment options for Porphyria Cutanea Tarda (PCT), including therapeutic phlebotomy, low-dose hydroxychloroquine, and trigger management.

06

Living with PCT: Long-Term Monitoring and Liver Health

Learn how to manage Porphyria Cutanea Tarda (PCT) in remission. Understand long-term liver monitoring, hepatocellular carcinoma screening, and relapse prevention.

Common questions in this guide

What is Porphyria Cutanea Tarda (PCT)?
PCT is a highly treatable, liver-based metabolic disorder caused by a deficiency of the UROD enzyme. This deficiency leads to an accumulation of light-sensitive compounds called porphyrins in the body.
What are the main symptoms of PCT?
The hallmark symptoms of PCT include fragile, blistering skin on areas exposed to the sun. This happens because the buildup of porphyrins makes the skin extremely sensitive to visible light.
How is Porphyria Cutanea Tarda treated?
Standard treatments for PCT are highly effective and typically include phlebotomy (therapeutic blood removal), specific medications, and identifying and managing underlying triggers.
What kind of doctor treats PCT?
Because PCT affects both the liver and the skin, your care team may involve a dermatologist, a hematologist, or a hepatologist. It is important to discuss with your healthcare providers who will take the lead in managing your condition.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.Based on my specific lab results, what is our immediate first step for treatment?
  2. 2.Who will be the primary doctor managing my PCT—a dermatologist, hematologist, or hepatologist?
  3. 3.Are there any immediate changes I need to make to my current medications?

Questions For You

Tap a prompt to share your answer — we'll use it plus this page's context to start a tailored conversation.

This guide provides educational information about Porphyria Cutanea Tarda (PCT) and is not medical advice. Always consult your healthcare provider or specialist regarding your specific diagnosis and treatment options.

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