A disease that killed millions of people in medieval times is on the rise again in the UK - and it's vital that you get tested early if you think you might have it.
The gruesome sexually transmitted infection gives people painful sores, warts and rashes, and can lead to fatal problems with your heart and brain without treatment.
Syphilis erupted across Europe in the 1490s, when the disease caused five million deaths and was described as "the great pox".
Now, new data from the UK Health Security Agency shows infectious syphilis diagnoses increased to 8,692 in 2022, up 15.2% compared to 2021, and the largest annual number since 1948.
Cases of gonorrhoea also went up to 82,592 in 2022, reports Wales Online, an increase of 50.3% compared to 2021 - making it highest number of diagnoses in any one year since records began in 1918.
Teachers, civil servants and train drivers walk out in biggest strike in decadeThe UK government says that while some increases will in part be due to more uptake in testing, the scale of the increase strongly suggests that there is also higher transmission of STIs within the population.
Here are eight symptoms of syphilis you should know about:
According to the NHS, symptoms of initial syphilis infection can often be mild and hard to notice. They also tend to change over time, and may "come and go".
The symptoms are:
It is important that you go to a sexual health clinic or see a GP if you or a sexual partner have symptoms of syphilis, a sexual partner has told you they have syphilis or another sexually transmitted infection (STI), or you recently had sex with a new partner and did not use a condom.
The NHS also said it is important to get tested if you're pregnant or planning to get pregnant, and suspect that you might have syphilis.
Tests for STIs are free on the NHS.
Unlike in medieval times, these days syphilis can fortunately be treated with antibiotics - but you should wait until you have finished treatment and been given the all-clear before having sex.
If left untreated, syphilis can cause serious and potentially life-threatening problems including:
These may not appear for many years after being infected.
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