Tertiary syphilis often appears two to three years after contracting syphilis. Syphilis is staged based on the time of onset, and is typically divided into primary, secondary, and tertiary stages. Tertiary syphilis is the latest and most severe stage among these, often affecting the heart, nervous system, skin, and other areas. Due to the risk of severe complications, early and timely treatment is recommended to prevent the occurrence of tertiary syphilis.