Sexually transmitted infections

If you are worried that something may be wrong down there, or you’d like to check your symptoms, we’ve provided an explanation of each sexually transmitted infection (STI) so you’ll feel more in the know.

Thrush is a yeast infection caused by a fungus called Candida albicans. Both men and women can get thrush though it is more often associated with women.

A woman can use emergency contraception to prevent pregnancy after having unprotected sex, or if a method of contraception has failed.

Thrush is a yeast infection caused by a fungus called Candida albicans. Both men and women can get thrush though it is more often associated with women.

Genital warts are small, fleshy bumps that appear around the genital or anal area. Learn more, including causes, symptoms, diagnosis and treatment of genital warts.

Varicose veins are swollen and enlarged veins that are usually blue or dark purple. They may also be lumpy, bulging or twisted in appearance.

An ultrasound scan (sonogram) is a procedure that uses high frequency sound waves to create an image of part of the inside of the body.

Stretch marks are narrow streaks or lines that develop on the surface of the skin. They are often referred to by doctors as stria or striae and striae gravidarum during pregnancy.

Pre-eclampsia is a condition that affects some pregnant women, usually during the second half of pregnancy (from around 20 weeks) or soon after their baby is delivered.

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NHS Choices information on polyhydramnios, with links to other useful resources

A miscarriage is the loss of a pregnancy that happens during the first 23 weeks.

Mastitis is a condition that causes a womans breast tissue to become painful and inflamed. It usually occurs in women who are breastfeeding.

In vitro fertilisation (IVF) is one of several techniques available to help couples with fertility problems to have a baby.

Artificial insemination is a treatment for infertility, when a couple cannot conceive a baby. It involves directly inserting sperm into a woman’s womb.

Haemorrhoids (hemorrhoids), also known as piles, are swellings that contain enlarged and swollen blood vessels in or around the lower rectum and anus.

Fibroids are non-cancerous tumours that grow in or around the womb (uterus). The growths are made up of muscle and fibrous tissue and can vary in size.

Epidural anaesthesia, often referred to as an epidural, is an injection into the back that numbs the lower half of the body and stops any pain being felt.

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Find everything you need to know about chorionic villus sampling (CVS), a test carried out during pregnancy to detect specific abnormalities in an unborn baby.

A caesarean section is an operation to deliver a baby. It involves making a cut in the front wall of a women’s abdomen (tummy) and womb.

Amniocentesis is a diagnostic test carried out during pregnancy to assess whether the unborn baby could develop an abnormality or serious health condition.

Artificial insemination is a treatment for infertility, when a couple cannot conceive a baby. It involves directly inserting sperm into a woman’s womb.

Bacterial vaginosis (BV) is a common yet poorly understood condition in which the balance of bacteria inside the vagina becomes disrupted.

Balanitis is swelling of the head of the penis and sometimes the foreskin is also affected. It is not normally serious and may be prevented with good hygiene.

A Bartholins cyst, also called a Bartholins duct cyst, is a small fluid-filled sac just inside the opening of a womans vagina.

Most women experience occasional bouts of vaginal thrush. It is caused by a yeast-like fungus called Candida albicans.

Thrush is a yeast infection caused by a fungus called Candida albicans. Both men and women can get thrush though it is more often associated with women.

Chlamydia is one of the most common sexually transmitted infections (STIs) in the UK.

Genital herpes is caused by the herpes simplex virus (HSV) type 1 or type 2. It causes painful blisters to appear on the genitals and the surrounding areas.

Genital warts are small, fleshy bumps that appear around the genital or anal area. Learn more, including causes, symptoms, diagnosis and treatment of genital warts.

Gonorrhoea is a sexually transmitted infection (STI) caused by bacteria called Neisseria gonorrhoeae or gonococcus. It used to be known as the clap.

HIV is a virus most commonly caught by having unprotected sex or by sharing infected needles and other injecting equipment to inject drugs.

In the past 50 years, there have been few changes in male contraception compared to the range of options available to women.

Urethritis is the inflammation of the urethra the tube that carries urine from the bladder out of the body. It is usually caused by an infection.

Pelvic inflammatory disease (PID) is an infection of the female upper genital tract, including the womb, fallopian tubes and ovaries.

Ejaculation problems, such as premature, delayed and retrograde ejaculation are a common cause of sexual problems in men.

Pubic lice (Phthirus pubis) are tiny parasitic insects that live on coarse human body hair, such as pubic hair. They spread through close body contact, most commonly sexual contact.

Scabies is a contagious skin condition caused by tiny mites which burrow into the skin. The main symptom of scabies is intense itching that is worse at night. It also causes a skin rash on areas where mites have burrowed.

Syphilis is a bacterial infection that is usually caught by having sex with someone who is infected.

Thrush is a yeast infection caused by a fungus called Candida albicans. Both men and women can get thrush though it is more often associated with women.

Most women experience occasional bouts of vaginal thrush. It is caused by a yeast-like fungus called Candida albicans.

Trichomoniasis is a sexually transmitted infection (STI) caused by a tiny parasite called Trichomonas vaginalis (TV).

Genital warts are small, fleshy bumps that appear around the genital or anal area. Learn more, including causes, symptoms, diagnosis and treatment of genital warts.