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Familial pseudoxanthoma elasticum associated with multiple comedones.

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Pseudoxanthoma elasticum (PXE) is a rare genetic disorder affecting connective tissues. This report details two sisters with PXE who presented with numerous open comedones on the neck, an unusual finding.

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Area of Science:

  • Genetics and rare diseases
  • Dermatology
  • Connective tissue disorders

Background:

  • Pseudoxanthoma elasticum (PXE) is an autosomal recessive disorder.
  • It is characterized by abnormal elastic fibers leading to connective tissue issues.
  • PXE affects skin, eyes, and vasculature, with varied presentations.

Observation:

  • Two sisters with classic cutaneous PXE were studied.
  • They exhibited typical PXE skin findings.
  • Unusually, they also presented with numerous open comedones on the neck.

Findings:

  • This is the first reported instance of numerous open comedones in familial PXE.
  • The co-occurrence suggests a potential, previously undocumented association.
  • Further research is needed to understand this specific manifestation.

Implications:

  • This finding expands the known clinical spectrum of PXE.
  • It may prompt re-evaluation of patients with similar dermatological findings.
  • Understanding this association could improve diagnostic criteria and patient management.