primary syphilis https://www.malacards.org/card/primary_syphilis The subclinical or symptomatic stage of syphilis, occurring at an average of three weeks after contact with an infected individual. It manifests with one or more painless, indurated ulcers (chancres) of the skin or mucous membranes at the site of inoculation. These lesions heal spontaneously within a few weeks. MESH:C536772 early syphilis, symptomatic MEDGEN:419772 ICD9:091 GARD:0027623 UMLS:C2931317 DOID:4156 NCIT:C128412 SCTID:186846005 MONDO:0002896 syphilis