Endometriosis is a condition where endometrial tissue, which usually lines the womb, grows outside the womb. As well as causing pain, endometriosis can lead to fertility problems in up to half of sufferers.
The reasons for this are not absolutely clear, but may be due to interference with ovulation or the build up of scar tissue. Whether or not IVF should be used as a treatment option depends upon factors such as your age, the severity of the endometriosis and whether there are any other fertility issues.
What causes endometriosis?
The cause of endometriosis remains unknown, although there have been a few possible theories put forward. These include genetic predisposition, immune dysfunction and environmental causes.