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In this book "A Practical Differential Diagnosis of Diseases of the Skin and Genitals for Physicians and Students" by Dr. Paul Tachau, given by Dr. Georg Honigmann-Giessen, there is a lucid and concise differentiation of all skin and genital lesions which could in any way be similar to syphilis, gonorrhea, soft ulcer and granuloma inguinale. This treatise infers that the specialties of dermatology and venereology go hand in hand. No attempt is made to discuss treatment; as the title states, all emphasis is placed on the diagnosis of the various conditions.
The old Ricord division into primary, secondary and tertiary stages of syphilis has a practical value but no sharp limits in regard to the length of time the stages should be taught. Secondary manifestations are most frequent in the first year after the infection and tertiary signs commonly occur later. Parenchymatous nervous syphilis, malignant syphilis and congenital syphilis are
PRAKTISCHE DIFFERENTIALDIAGNOSTIK FÜR AERZTE UND STUDIERENDE.. Arch Intern Med (Chic). 1930;45(6):1008-1009. doi:10.1001/archinte.1930.00140120183011