Vegetable eating wholly brought about King George's disease

• Disease caused by niacin and protein deficiency
• A disease caused by deficiency of niacin or tryptophan (or by a defect in the metabolic conversion of tryptophan to niacin)
• Disease from fermented grape in which everyone's thrown up
• Characterized by gastrointestinal disturbances and erythema and nervous or mental disorders
• May be caused by malnutrition or alcoholism or other nutritional impairments

Wiktionary Word definitions in Wiktionary
n. (context pathology English) A disease, with skin lesions and mental confusion, primarily caused by a niacin deficiency.

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Pellagra \Pel"la*gra\ (p[e^]l"l[.a]*gr[.a]), n. [It. pelle skin + agro rough.] (Med.) An affection of the skin, characterized by redness, especially in exposed areas, scaling and shedding of the skin, and accompanied with severe gastrointestinal disturbance ...

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ Another form of mental disorder, pellagra , was associated clinically with diarrhoea and dermatitis. ▪ Colitis, which is histologically similar to ulcerative colitis, has also been described in association with pellagra . ▪ Eat ...

Wikipedia Word definitions in Wikipedia
Pellagra is a vitamin deficiency disease most frequently caused by a chronic lack of niacin (vitamin B or synonym: vitamin PP (from: Pellagra Preventing factor)) in the diet. It can be caused by decreased intake of niacin or tryptophan , and possibly by ...