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Cutaneous eruptions definitely due to sensitivity to wool have been but rarely encountered in dermatological practice. Hosts of other substances have been reported from time to time as the contributing factor to various forms of skin eruptions. Four cases of undoubted sensitivity to wool and the marked benefit resulting from desensitization in the two cases in which it was employed are, I believe, sufficiently worthy of note to warrant reporting.
REPORT OF CASES
Case 1.—A white man, aged 63, first seen June, 1926, had a condition diagnosed chronic giant urticaria, which was of four years' duration. The eruption was worse in winter than in summer, although he had never been entirely free from it since the onset. The patient had received a considerable amount of various treatments with little or no benefit. He had been tested intradermally for reaction to proteins and had reacted to several foodstuffs and