Syphilis is a bacterial infection that progresses through distinct stages, each with its own set of symptoms. Recognizing these stages early can help you seek timely testing and treatment. In this guide, we'll walk through syphilis symptoms by stage, early signs of syphilis, syphilis testing options, and what to expect from diagnosis and prevention.

What Are the Early Signs of Syphilis?

The first sign of syphilis is typically a painless sore called a chancre, which appears at the site of infection—often the genitals, anus, or mouth. This sore may go unnoticed, especially if it is inside the body, and it usually heals on its own within three to six weeks. However, without treatment, the infection remains in your body and progresses to later stages. If you notice any unusual sore or lesion, especially after unprotected sexual contact, it is important to consider early signs of syphilis and seek medical advice. According to the Centers for Disease Control and Prevention (CDC), many people do not notice the chancre because it is painless and may be hidden.

How Syphilis Symptoms by Stage Progress

Syphilis symptoms by stage can vary widely, and some stages may have no symptoms at all. The infection moves through primary, secondary, latent, and tertiary stages if untreated. Here are the key symptoms by stage:

  • Primary stage: a single painless sore (chancre) at the infection site, appearing 10 to 90 days after exposure.
  • Secondary stage: a non-itchy skin rash, often on the palms of hands and soles of feet, along with fever, swollen lymph nodes, sore throat, and patchy hair loss.
  • Latent stage: no visible symptoms, but the bacteria remain in the body and can be detected with a blood test.
  • Tertiary stage: can occur years later and may damage the heart, brain, nerves, eyes, and other organs.

Because symptoms can be mild or mimic other conditions, testing is the only way to know for sure.

How Syphilis Is Diagnosed and Syphilis Testing Options

If you think you might have been exposed, getting tested is straightforward. How syphilis is diagnosed usually involves a blood test that looks for antibodies your immune system makes against the bacteria. If you have a sore, a healthcare provider may also take a sample from the sore to look for the bacteria under a microscope. Syphilis testing options include blood tests at a doctor's office, community health clinic, or through laboratory testing services. Many clinics offer confidential syphilis testing, meaning your information is kept private, and you can often get results within a few days. The World Health Organization (WHO) notes that rapid point-of-care tests are increasingly available and can provide results in minutes.

Syphilis Treatment and Prevention

Syphilis is curable with the right antibiotics. Syphilis treatment and prevention depend on the stage of infection. For early stages, a single injection of penicillin is often enough; later stages may require additional doses. If you are allergic to penicillin, other antibiotics may be used under medical supervision. It is crucial to complete the full course of treatment and avoid sexual contact until your healthcare provider confirms you are no longer infectious. To prevent syphilis, use condoms consistently and correctly, and get tested regularly if you have new or multiple partners. The CDC recommends routine screening for pregnant women and people at higher risk.

Learn More About Syphilis Symptoms by Stage If you recognize any of these signs or have had unprotected sex, getting tested promptly is the most important step you can take. Early detection and treatment can cure the infection and prevent long-term health problems. Consider speaking with a healthcare provider about your risk and the testing options available to you, including confidential syphilis testing. Taking charge of your sexual health is empowering and can help protect both you and your partners.