Short answer · Medically reviewed summary · Last updated: 2023-07-13
Pseudoxanthoma Elasticum (PXE) is a rare genetic disorder that affects the connective tissues in the body, particularly in the skin, eyes, and blood vessels. Diagnosing PXE involves a combination of clinical evaluation, medical history assessment, and specialized tests. Clinical Evaluation: A healthcare professional will conduct a thorough physical examination to assess the presence of characteristic signs and symptoms associated with PXE.
How is Pseudoxanthoma Elasticum (PXE) diagnosed?
How Pseudoxanthoma Elasticum (PXE) is diagnosed: tests, specialists and the diagnostic journey, told by patients and reviewed against medical sources.
Pseudoxanthoma Elasticum (PXE) is a rare genetic disorder that affects the connective tissues in the body, particularly in the skin, eyes, and blood vessels. Diagnosing PXE involves a combination of clinical evaluation, medical history assessment, and specialized tests.
Clinical Evaluation: A healthcare professional will conduct a thorough physical examination to assess the presence of characteristic signs and symptoms associated with PXE. These may include yellowish bumps or papules on the skin, particularly in flexural areas such as the neck, armpits, and groin. Additionally, they will examine the eyes for specific ocular manifestations like angioid streaks, which are breaks in the Bruch's membrane of the retina.
Medical History Assessment: Gathering a detailed medical history is crucial in diagnosing PXE. The healthcare provider will inquire about any family history of PXE or related conditions, as PXE is an inherited disorder caused by mutations in the ABCC6 gene. They will also ask about the presence of symptoms such as skin changes, vision problems, cardiovascular issues, or gastrointestinal complications.
Specialized Tests: To confirm the diagnosis of PXE, several specialized tests may be performed:
1. Skin Biopsy: A small sample of skin tissue is taken and examined under a microscope. PXE is characterized by the presence of abnormal elastic fibers in the skin.
2. Ophthalmologic Examination: An eye specialist will perform a comprehensive eye examination, including dilated fundus examination, optical coherence tomography (OCT), and fluorescein angiography. These tests help identify angioid streaks, which are a hallmark of PXE.
3. Genetic Testing: Genetic testing can confirm the presence of mutations in the ABCC6 gene, which is responsible for PXE. This test is particularly useful in cases where the diagnosis is uncertain or to identify carriers of the condition.
4. Imaging Studies: X-rays, ultrasound, or other imaging techniques may be used to evaluate the presence of calcification in the blood vessels, a common feature of PXE.
It is important to note that the diagnosis of PXE should be made by a qualified healthcare professional experienced in the management of this condition. Early diagnosis is crucial for appropriate management and monitoring of PXE-related complications.
