I understand there are three stages of syphilis infection. what are they?

1, 2, latent, 3.: Syphilis, a sexually transmitted infection, has 3 stages. Primary syphilis consists of a painless ulcer on the genitalia. Secondary syphilis can cause a rash, large lymph nodes, fever, and malaise. Syphilis then is latent in the body for years before passing to the 3rd stage. Tertiary syphilis causes dementia, disease of the aorta, and growths (gummas) in virtually any organ.

See below: Primary-characterized by the chancre or ulcer that forms on the genitalia. Secondary-characterized by the rash. Late or tertiary-including neurosyphillis, cardiovascular syphillis and gummas(granulomatous tumor like masses).