Pellagra is a slow but usually progressive disease occurring chiefly in Italy, due, it is thought, to the continued ingestion of decomposed or fermented maize. It is characterized by cutaneous symptoms, at first upon exposed parts, of an erythematous, desquamative, vesicular and bullous character, and by general constitutional disturbance of a markedly neurotic type. A fatal ending, if the disease is at all severe or advanced, is to be expected.
Treatment is based upon general principles.
Epithelioma.
(Synonyms: Skin Cancer; Epithelial Cancer; Carcinoma Epitheliale.)
What several varieties of epithelioma are met with?
Three—the superficial, the deep-seated, and the papillomatous.
Describe the clinical appearances and course of the superficial variety of epithelioma.
The superficial, or flat variety (rodent ulcer), begins, usually on the face, as a minute, firm, reddish or yellowish tubercle, as an
Fig. 64.
