Unexplained infertility is defined as a period of infertility of more than three years during which sperm tests are normal, ovulation is normal depending on the measurement of basal body temperature or serum measurement of progesterone and Tubes and pelvic cavity are normal according to the results of laparoscopy, with or without a hysterosalpingogram (HSG). Patients with normal results and less than three years of infertility have a 60% chance of conceiving a child naturally within the next 18 months. After three years, however, the chances of conceiving a child are only 30% or less, depending on the age of the woman and the duration of the infertility. This figure means that there is about 3% chance per month or less.
In case of unexplained infertility or failure of the usual treatments, advanced infertility treatments may be advised. These treatments include hyperstimulation/IUI and IVF/ICSI.