The symptoms of syphilis are similar for men and women. They're often mild and difficult to recognise, and you may pass on the infection without knowing you have it.
The symptoms tend to change over time and may come and go.
Even if the symptoms do improve, there's still a risk you could pass the infection on or develop serious problems if you don't get treatment.
The first symptoms of syphilis usually develop around 2 or 3 weeks after infection, although they can start later than this.
This stage of the infection is known as "primary syphilis".
These symptoms usually pass within 2 to 8 weeks. But if the infection isn't treated, it may progress to a second stage.
Further symptoms may develop a few weeks after the initial symptoms have passed. This is known as "secondary syphilis".
Symptoms of secondary syphilis include:
These symptoms usually pass within a few weeks, although they may come and go over several months before they disappear.
You'll still be infected even if you don't have symptoms. This is known as "latent syphilis" and it can last for decades and lead to serious problems if not treated.
It's still possible to pass on the infection during this stage, although this usually only happens within 2 years of becoming infected.
Without treatment, a syphilis infection can last for years or decades without causing any symptoms.
Eventually, it can spread to parts of the body such as the brain or nerves and cause serious and potentially life-threatening problems. This is known as "tertiary syphilis".
People with tertiary syphilis may experience:
Syphilis is still treatable at this stage, but it's sometimes not possible to reverse any damage that's already been done.
Page last reviewed: Mon Feb 2022 Next review due: Wed Feb 2020