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Casal collar

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The Casal collar or Casal necklace is a clinical sign in which there is an erythematous pigmented skin rash in the distribution of a broad collar (dermatomes C3 and C4). It is seen in patients with pellagra.[1]

The sign is named after Gaspar Casal.

References

  1. ^ Barry G. Firkin, Judith A. Whitworth. Dictionary of Medical Eponyms. Informa Health Care, 2001, page 60. ISBN 978-1-85070-333-4.


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