Tertiary (late)syphilis less frequently seen today than in the past because of early detection and adequate treatment 。 Early syphilis: inadequate treatment or untreated usually develop within 3-10 years of infection Tertiary (late) syphilis • less frequently seen today than in the past because of early detection and adequate treatment • Early syphilis: - inadequate treatment or untreated • usually develop within 3-10 years of infection