primary syphilis (DOID:4156)
Alliance: disease page
Synonyms: early symptomatic syphilis; early syphilis, symptomatic; Symptomatic early syphilis
Alt IDs: ICD9CM:091, ICD9CM_2006:091, UMLS_CUI:C0153139
Definition: A syphilis that is the first stage of syphilis, marked by the development of a chancre, which is characterized by mononuclear leukocytic infiltration, macrophages, and lymphocytes.