In a previous publication an attempt was made to correlate the dermatologic and internal medical manifestations presented by a group of 5 cases illustrating what might be termed a "transitional" state between dermatomyositis and systemic lupus erythematosus.1 With but one exception, the cases were observed by me over relatively long periods, while the remaining instance provided an opportunity to furnish additional data on the early phases of the condition. Besides these, other examples of dermatomyositis that have come under my observation were mentioned briefly in connection with the elaboration of certain fundamental points. It is my belief that these diseases or manifestations of them will "become more common" when the practitioner learns to recognize them and their atypical variants; this is already apparent in the case of systemic lupus erythematosus. It is interesting that the literature now contains the reports of hundreds of instances of dermatomyositis, many of these
KEIL H. DERMATOMYOSITIS AND SYSTEMIC LUPUS ERYTHEMATOSUS: II. A COMPARATIVE STUDY OF THE ESSENTIAL CLINICOPATHOLOGIC FEATURES. Arch Intern Med (Chic). 1940;66(2):339–383. doi:10.1001/archinte.1940.00190140047004
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