There were nearly 74,000 new cases diagnosed in 2012.The warts are usually painful, but may be itchy or red. HPV is spread by skin-to-skin contact, so you can catch it even if you haven't had penetrative sex - and condoms DON' T provide complete protection.
In men, gonorrhoea can cause swelling in the foreskin and, in rare cases, pain in the testicles.
Nearly 35,000 new cases were reported in England in 2014.
Symptoms include pain or a burning sensation during sex, and an unusual discharge.
Genital herpes in a common infection caused by HSV virus, which also causes cold sores. The symptoms can develop a few days after contact and include small, painful blisters which itch or tingle - and can make it difficult to urinate.
Herpes is not treatable, but can be controlled with antiviral medicines.