The symptoms of syphilis are divided into three stages as follows:

Stage 1: Once infected, the site of the transmission, such as the external genital area, lips, tongue, tonsils, or nipples, will have small lesions that are two to four millimeters in size. They will then expand and get bigger until they break open into a large oval-shaped wound that is flat and hard. The wound appears clean and is hard to the touch. The lesions are usually painless. The infection then spreads to the lymph nodes in the groin, causing them to become swollen. If left untreated the wounds may heal on their own. There are often no other symptoms at this stage.
Stage 2: About two to three weeks after the first stage the infection affects the various lymph nodes of the body, such as behind the ears, in the groin and behind the knees, and enters the bloodstream and spreads to different parts of the body. This causes rashes to appear all over the body and may be known as the “blooming stage.” Unlike other diseases, in syphilis the rashes are also found on the palms of the hands and may not itch. The rash is often raised and there may be patches of dead skin due to these rashes. Other symptoms may include sore throat, body aches, and loss of all hair or in patches. A blood test would reveal a positive result for syphilis at this point. These symptoms may disappear without treatment, but the infection remains. Some patients may not experience any rashes at all, but may have fevers along with the aforementioned symptoms. Without treatment the infection will enter a resting state and remain hidden in the organs of the body. There may be no symptoms for years, with the exception of a positive blood test for the disease.
Stage 3: This is the final stage of the disease or the latent stage, and occurs about three to ten years after transmission. Symptoms may occur in many parts of the body, such as blindness, nose loss, deafness, facial deformity, and brittle bones. Some may experience dementia and others may seem insane. If the infection has reached the heart it may cause an abnormality like valvular heart disease, putting the patient at risk for a heart attack. If the infection has traveled to the spine it may cause paralysis and the patient is at risk of death.