SOME COMMON ERRORS IN DIAGNOSING DISEASES OF THE SKIN.Read before the Chicago Medical Society, February 2, 1891.

JAMA. 1891;XVI(12):401-404. doi:10.1001/jama.1891.02410640005001a.
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There is surely no other class of diseases in which the chief symptoms are more tangible and conspicuous, more ready for close inspection and touch, more easy of examination by the eye, be it unaided or armed with loupe and micro scope, than in affections of the skin. And yet perhaps in no other branch of medicine are diag nosticai errors committed with equal frequency. The cause for this peculiar discrepancy lies partly in the fact that real difficulties are indeed but too often encountered, inasmuch as diseases of essentially different etiology and nature may assume similar pictures. Under such circumstances only large experience and often onty a continued observation of the course of the disease will help in arriving at a correct understanding of the case. In a large number of instances, however, the symptoms are so clear and unmistakable that a misinterpretation of the same, by the majority


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