Speaking of syphilis
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What is the difference between acquired syphilis and congenital syphilis?
1. Acquired syphilis
① Early syphilis
The post-infection disease period is within 2 years, including primary syphilis and early latent syphilis.
② Late syphilis
The post-infection disease period is more than 2 years, which is tertiary syphilis
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2. Congenital syphilis
① Early congenital syphilis develops at an age less than 2 years old, and about 2/3 of the sick children develop within 3 weeks and 8 weeks after birth.② Advanced congenital syphilis develops at ages greater than 2 years old, and most of it occurs between 5 and 8 years old.③ Those with congenital latent syphilis younger than 2 years old are early congenital latent syphilis. Those with an age greater than 2 years old are advanced congenital latent syphilis. Differential diagnosis of syphilis 1. Primary syphilis hard chancre should be differentiated from soft chancre, fixed drug eruption, genital herpes, etc. 3. The rash of secondary syphilis should be differentiated from pityriasis rosea, erythema multiforme, tinea versicolor, psoriasis, tinea corporis, etc. Condyloma plana should be differentiated from condyloma acuminatum.
2. Lymph node enlargement in primary syphilis should be differentiated from lymph node enlargement caused by soft chancre and venereal lymphogranuloma.