Thrush is a yeast infection caused by a fungus called Candida albicans, which usually lives harmlessly in the body. The fungus can lead to thrush if your body is unable to keep it under control.
It is possible for thrush to be passed on through sexual intercourse, although this is uncommon.
Signs and symptoms of thrush
In men, symptoms of thrush can include:
- redness, itching and irritation at the site of infection (often at the head of the penis)
- thick, lumpy discharge under the foreskin
- pain when passing urine
- finding it hard to pull back the foreskin
The symptoms of thrush are similar in women, but the vagina is usually affected instead.
If you have thrush, it is best to avoid having sex until you have completed a course of treatment and the infection has cleared up.
Find out more about thrush in men and women, including how to get treatment.