Porphyria Cutanea Tarda Presenting with Scleroderma, Ichthyosis, Alopecia, and Vitiligo

Area of Science:

• Dermatology
• Genetics
• Internal Medicine

Background:

• Porphyria cutanea tarda (PCT) is a common porphyria affecting the skin, typically presenting in adulthood.
• PCT is characterized by photosensitive blistering and fragility of the skin, primarily on sun-exposed areas.
• This case involves a complex presentation of PCT with atypical dermatological manifestations.

Observation:

• A 67-year-old woman with Porphyria cutanea tarda presented with a rare combination of scleroderma, acquired ichthyosis, and nonscarring alopecia.
• Potential triggers identified include tamoxifen therapy for breast cancer and carrier status for the hemochromatosis gene.
• The patient developed extensive vitiligo while undergoing treatment with high-dose chloroquine.

Findings:

• High-dose chloroquine therapy led to clinical remission of PCT and normalization of uroporphyrin levels.
• The development of vitiligo during chloroquine treatment raises questions about its etiology.
• The patient's unusual presentation and treatment response offer insights into PCT management.

Implications:

• This case underscores the importance of recognizing diverse cutaneous manifestations of Porphyria cutanea tarda.
• It highlights potential drug interactions and side effects, such as vitiligo, associated with chloroquine treatment for PCT.
• Further investigation is warranted to elucidate the relationship between PCT, chloroquine therapy, and the development of vitiligo.