Commentary: Hoarseness in pellagra.

Pellagra is the clinical manifestation of niacin deficiency. The classical manifestations of pellagra include diarrhea, dementia, and dermatitis, but not all patients with pellagra present with all three manifestations. In this issue of the Journal of Clinical Neuroscience Hiraga et al. present an interesting patient with pellagra who has laryngitis and hoarseness. Clinicians should remain alert for both the common and uncommon clinical manifestations of pellagra.