Also found in: Thesaurus, Medical, Encyclopedia.


 (pə-lăg′rə, -lā′grə, -lä′-)
A disease caused by a deficiency of niacin and protein in the diet and characterized by skin eruptions, digestive and nervous system disturbances, and eventual mental deterioration.

[Italian : pelle, skin (from Latin pellis; see pel- in Indo-European roots) + -agra, a seizure (from Latin, from Greek -agrā, from agrā, a seizing; see ag- in Indo-European roots).]

pel·lag′rous adj.
References in periodicals archive ?
3) The extra-cutaneous manifestations are less specific, but their association with pellagrous skin lesions are sufficient to reach a diagnosis.
Other important syndromes would be Marchiafava-Bignami, pellagrous encephalopathy and acquired hepatocerebral degeneration, all of them with a reasonably well-established pathogenesis (Victor, 1994).
Other documented ACDRs were SJ syndrome [Figure-3], melasma, angioedema, erythema multiformae, urticaria, drug induced erythroderma, maculopapular exanthema, pellagrous dermatitis, hypertrichosis, stria, hyperpigmentation, bullous FDE and phototoxic reaction in descending order.