There can be many reasons for infertility. It may be due to the problems in the female reproductive system or the male reproductive system. However, there are many cases in which no recognizable factor can be isolated for infertility. It is an infertility condition with unknown causes. According to IVF centre, the condition is identified when the doctors fail to recognize the causes of infertility, even after semen analysis of the male partner and assessment of the ovulation cycle and fallopian tubes in the female partner. In such a condition, the IVF doctor may be the person who can help