If syphilis isn't treated, stage two symptoms begin to occur, usually six to eight weeks after chancres have disappeared. These symptoms will eventually go away by themselves after several weeks, but the disease stays alive inside the body if it isn't treated. Stages three and four occur up to ten or more years after someone is first infected with syphilis. In these stages, internal organs are ravaged by the syphilis bacteria. The heart, brain and sex organs can be affected.
People can suffer permanent blindness, paralysis, heart disease and psychiatric problems.
Left untreated, syphilis can eventually kill its victims. If you experience any of the above symptoms, especially if you notice a sore on or near your genitals, it is very important to see a health care provider. If syphilis is suspected, you will be given a simple blood test to determine whether or not you have the disease. When syphilis is diagnosed in its early stages, it is easily curable with prescription drugs. Penicillin is usually used, but for people who are allergic, there are other options.