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Blau syndrome presenting with ichthyosis.

Grant Masel1, Anne Halbert

  • 1Dermatology Department, Princess Margaret Hospital, Perth, Western Australia, Australia. gmmf.iinet.net.au

The Australasian Journal of Dermatology
|January 27, 2005
PubMed
Summary

Blau syndrome, a rare genetic disorder, presented with uveitis, joint disease, and ichthyosis in a young girl. This case highlights ichthyosis as a primary skin manifestation in Blau syndrome, a condition linked to CARD15 gene mutations.

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Area of Science:

  • Genetics
  • Dermatology
  • Rheumatology

Background:

  • Blau syndrome is a rare, autosomal dominant, multisystem granulomatous disorder.
  • It shares features with sarcoidosis but is caused by CARD15 gene mutations.
  • The condition typically manifests in early childhood with uveitis, arthritis, and dermatitis.

Observation:

  • A 12-year-old girl presented with uveitis, joint disease, and ichthyosis.
  • Skin biopsy revealed sarcoidal-type granulomas.
  • A family history of similar symptoms was noted in her sister.

Findings:

  • The clinical presentation and familial history led to a diagnosis of Blau syndrome.
  • This case is the first to describe ichthyosis as the primary skin manifestation.

Related Experiment Videos

  • The CARD15 gene, implicated in Blau syndrome, is also associated with psoriatic arthritis and Crohn's disease.

    • Implications:

    • This expands the known spectrum of skin involvement in Blau syndrome.
    • It underscores the importance of genetic testing for CARD15 mutations in suspected cases.
    • Further research may elucidate the role of CARD15 in diverse granulomatous conditions.