The main clinical manifestations of primary syphilis

Syphilis is a sexually transmitted disease caused by Treponema pallidum infection, mainly through direct sexual transmission, mother-to-child vertical transmission and blood transmission of infection. The performance of primary syphilis is mainly hard chancre, genital parts or anal performance of painless ulcers, clean surface, painless itch, feel cartilage-like hardness, can be accompanied by inguinal lymph node swelling. At this time syphilis serological examination positive, diagnosed with syphilis after a timely penicillin treatment, generally with benzathine penicillin intramuscular injection, once a week, each time 2.4 million units, continuous injection for three weeks, after the end of treatment to regular follow-up observation 2-3 years.