Latent Stage
In this stage of syphilis, the primary and secondary symptoms disappear. There are no noticeable symptoms at this stage. But the treponema pallidum bacterium still remains in the body. This stage could last for years before progressing to tertiary syphilis. In this stage, people leave with syphilis for years without any symptoms of infection. However, if it is left unattended to, it can lead to serious health problems.
Tertiary Stage
This is the last stage of syphilis. Approximately fifteen to thirty percent of people who did not receive syphilis treatment enter tertiary stage. Tertiary syphilis can occur ten to thirty years after the onset of the infection. Tertiary syphilis causes blindness, deafness, memory loss, and heart disease, neurosyphilis [4](an infection of the central nervous system (CNS) the brain or spinal cord), neurological disorders such as stroke, mental illness. Gummas, soft, tumor-like growth of the tissues (granuloma) that can occur anywhere on the body. Organ damage means that tertiary syphilis can often lead to death. Treating syphilis before it reaches this stage is critical.