. A practical treatise on diseases of the skin, for the use of students and practitioners . e deformity left by its ungainly attempts atrepair. The entire head may be thus converted into a hideoustravesty of humanity, while yet its possessor is left with all hisvital organs and tunctions apparently unimpaired. Etiology.—The causes of lupus vulgaris are absolutely is certainly in no way associated with either acquired orhereditary syphilis. From scrofula it is as widely separated in LUPUS VULGARIS. 269 its clinical features as is lupus erythematosus; and upon thispoint the statements
. A practical treatise on diseases of the skin, for the use of students and practitioners . e deformity left by its ungainly attempts atrepair. The entire head may be thus converted into a hideoustravesty of humanity, while yet its possessor is left with all hisvital organs and tunctions apparently unimpaired. Etiology.—The causes of lupus vulgaris are absolutely is certainly in no way associated with either acquired orhereditary syphilis. From scrofula it is as widely separated in LUPUS VULGARIS. 269 its clinical features as is lupus erythematosus; and upon thispoint the statements made above in considering the etiology ofthe last-named disease are here equally pertinent. It is neithercontagious nor transmissible by heredity; nor is it limited toeither sex, nor to inviduals of any social grade. It occurs attimes in the anaemic and the asthenic; but also in those otherwisepossessing all the symptoms of fair health and even excellentvigor. It is much rarer in this country than abroad, occurringhere with nearly the frequency of lupus erythematosus. It is Fie;. Section of a lupous nodule. d d b, normal corium; a, reticulum with lupous elemec, d, giant cells. (After Kaposi.) generally first seen between the third and sixth years of life;after the thirtieth year of life practically never, unless there havebeen prior symptoms of the disease. Pathology.—For a knowledge of the microscopic characters oflupus vulgaris we are largely indebted to the Germans, whoseopportunities for the study of the disease are unequalled. Vir-chow, Auspitz, Billroth, Lang, Kaposi, Klebs, and Stilling, withThin, of England, have amply contributed to the subject; andthe result of their investigations may be concisely stated as fol-lows:— 270 DISEASES OF THE SKIN. The more recent nodules when divided exhibit at differentdepl hs of i he corinra roundish masses, comparable to a nidus ornest, above which spreads an unaltered epidermis. These fociof the disease are well defined i
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