Casal collar
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English
Etymology
Named after Gaspar Casal, who first described pellagra.
Noun
Casal collar (plural Casal collars)
- (pathology) The presence of an erythematous pigmented skin rash in the distribution of a broad collar, seen in patients with pellagra as a result of niacin deficiency.
- Synonyms: Casal necklace, Casal's collar, Casal's necklace