We call unexplained infertility the inability to detect a definite cause of infertility after a full check – up of both partners. Approximately 15% of infertility cases are unexplained.
When examining infertility causes in both partners, we often do not detect one major but many minor factors. These mild factors, especially when coexisting and combined, sensibly reduce the monthly odds of achieving pregnancy.
See the model below, created by Australian scientists, with regards to the way fertility is affected by the existence of numerous mild factors of infertility:
The term “mild factors of infertility” includes the following:
• Mild problems in sperm
• Advanced age of woman
• Poor oocyte quality
• Severe cases of polycystic ovaries
• Uterine anomalies e.g. diaphragm etc.
Diagnosis of unexplained infertility is not accurate, unless laparoscopy is carried out to rule out diseases, such as endometriosis or adhesions. Unexplained infertility may be related to oocyte and sperm defects and many of those diseases may be successfully treated with IVF