This open access book explores the history of pellagra, a vitamin deficiency disease brought about by a shift in agriculture to maize, and which was first identified in Italy in the 1760s. With a focus on the insanity that was caused by the disease, the authors examine how thousands of patients were treated in Italian psychiatric asylums, shedding light on the sufferer's point of view. Setting pellagrous insanity in a wider context of man-made...