Syphilis is a sexually transmitted infection (STI) caused by the bacterium Treponema pallidum. It progresses through several stages if left untreated, including primary, secondary, latent, and tertiary syphilis, and can affect various organ systems over time. Syphilis is primarily spread through sexual contact, including oral, anal, and vaginal sex. It can also be transmitted from mother to child during pregnancy, leading to congenital syphilis....