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To the Editor of the Journal of the American Medical Association:
The writer who described the interesting case under the above head-line, in the last number of The Journal, did not mention the kind of coffee that produced the pruritus ani.In some cases, at least, one kind of coffee will occasion intolerable itching and consequent insomnia, while another kind can be used moderately without giving rise to any unpleasant symptoms.I have had a case under observation, in which Mocha coffee in minute quantities will produce pruritus, while pure Java, in draughts of two or three cups a day, can be taken with no ill effects. If a small amount of Mocha be added—say 12 to 25 per cent.—the pruritus returns.In this case, I found two remedies that relieved the itching and prevented the insomnia. Pure camphor-menthol, applied to the affected parts, relieved the pruritus, but left an
Bishop SS. Coffee as a Cause of Pruritus Ani.. JAMA. 1892;XVIII(6):176. doi:10.1001/jama.1892.02411100024010