Inborn Errors of Metabolism: Pseudoxanthoma Elasticum

Area of Science:

• Ophthalmology
• Genetics
• Dermatology
• Cardiology

Background:

• Pseudoxanthoma elasticum (PXE) is an autosomal recessive multisystem disorder.
• PXE affects approximately 1 in 50,000 people globally, with a higher prevalence in females.
• The condition involves progressive calcification and fragmentation of elastic fibers in the skin, eyes, and cardiovascular system.

Purpose of the Study:

• To describe the clinical manifestations of Pseudoxanthoma elasticum.
• To highlight the key ocular, dermatological, and cardiovascular findings associated with PXE.
• To emphasize the underlying pathophysiology of PXE.

Main Methods:

• This abstract summarizes clinical findings from existing literature on Pseudoxanthoma elasticum.
• It details characteristic fundus findings, skin changes, and cardiovascular complications.
• Pathophysiology is described based on current understanding of elastic fiber degeneration.

Main Results:

• Ocular findings include angioid streaks, reticular macular dystrophy, peau d'orange, optic nerve drusen, and vitelliform-like deposits.
• Skin manifestations present as a 'plucked chicken' appearance in flexure areas and increased skin laxity.
• Cardiovascular changes involve accelerated atherosclerosis, hypertension, and restrictive cardiomyopathy.

Conclusions:

• PXE is a multisystem disorder with significant ocular, dermatological, and cardiovascular impact.
• Early recognition of characteristic signs is crucial for timely diagnosis and management.
• Understanding the pathophysiology of elastic fiber degeneration is key to addressing PXE complications.