Quick read
Key points
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Syphilis is a bacterial sexually transmitted infection that progresses through stages if left untreated. It typically begins with a small, painless sore (chancre) at the site of infection, followed weeks later by a rash, and can eventually affect the heart, brain, and other organs if untreated for years.
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Topic-specific prevention and risk reduction will be added during the article-specific evidence audit.
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You notice a painless sore or ulcer in the genital, anal, or mouth area
01 · Know
What is Syphilis?
Syphilis is a bacterial sexually transmitted infection that progresses through stages if left untreated. It typically begins with a small, painless sore (chancre) at the site of infection, followed weeks later by a rash, and can eventually affect the heart, brain, and other organs if untreated for years.
Because early symptoms can be mild, easily missed, or mistaken for something else, syphilis can go unnoticed for a long time. It's straightforward to test for and, especially in early stages, easy to treat effectively with antibiotics.
02 · Understand
Clinical context
Self-care advice
Visit a sexual health clinic or your GP for testing if you notice symptoms or have concerns about possible exposure to syphilis.
03 · Act
When to see a doctor
- 1You notice a painless sore or ulcer in the genital, anal, or mouth area
- 2You develop a rash, particularly on the palms of the hands or soles of the feet
- 3A sexual partner has been diagnosed with syphilis
- 4You'd like routine STI screening, particularly with new or multiple partners
- 5You've previously been treated for syphilis and want to confirm it's fully cleared
04 · Prevent & manage
Practical steps
Take these self-care steps
These measures can help ease symptoms, support recovery, and reduce the chance of things worsening — but they don't replace medical advice if symptoms are severe or persistent.
- 1Get tested if you have any risk factors or symptoms.Since early syphilis can be easy to miss, testing is important if you've had unprotected sex or symptoms.
- 2Complete the full course of antibiotics.Syphilis is very treatable with antibiotics, especially in earlier stages, when taken exactly as prescribed.
- 3Avoid sex until treatment is complete and confirmed.This prevents passing the infection to others or catching it again.
- 4Notify sexual partners.This allows them to be tested and treated, which is important for stopping the spread of infection.
- 5Attend follow-up blood tests.These confirm the infection has been successfully treated.
Evidence
References
BarnMD Health Intelligence uses authoritative and clinically relevant sources appropriate to the topic. References are shown so readers can inspect the evidence directly.
- HSE: Syphilis ↗
Medical information notice
Health education, not individual medical advice
BarnMD Health Library provides general health education for public health literacy. Reading this article does not establish a doctor-patient relationship and this information is not a diagnosis, prescription, or personalised treatment plan. If you have symptoms or concerns about your health, seek appropriate advice from a qualified healthcare professional. If you develop emergency warning signs, seek urgent or emergency medical attention.
BarnMD Bottom Line
Syphilis is straightforward to test for and treat, especially when caught early, making regular sexual health screening valuable if you're at risk.
A painless sore in the genital area is easy to overlook, but it's often the first sign of syphilis and worth getting checked.