- Infertility disorder is a category of reproductive health-related diseases characterized by the failure to conceive or the appearance of recurrent miscarriage or stillbirth as problems.
- Causes are diverse, including abnormalities in ovulation, fallopian tubes, uterus, sperm production, or movement; factors such as age and underlying diseases may be involved. Factors from both partners may act together, or the cause may remain unidentified.
- Pregnancy requires a sequence of events: ovulation, the meeting of sperm and egg, the movement and implantation of the fertilized egg, and the maintenance of pregnancy; thus, if any stage of this process is affected, the possibility of pregnancy may decrease.
- The representative manifestation is the failure to conceive despite attempting pregnancy for a certain period without contraception, and recurrent miscarriage or stillbirth may appear as related problems.
- Risks and treatment responses may vary depending on age, reproductive organ diseases, hormonal/metabolic diseases, past surgery or infection, sperm-related factors, smoking/alcohol consumption, and environmental exposure.
- Infertility itself may occur without specific physical symptoms; however, clues depending on the cause, such as menstrual abnormalities or sexual dysfunction, may accompany it, and the clinical course varies according to the cause and age.
- Diagnosis is conducted by combining evaluation of both partners together with medical history, menstrual and sexual history information, physical examination, semen analysis, ovulation and hormone assessment, and, if necessary, fallopian tube, uterine, and other examinations.
- A single test result alone cannot definitively determine the possibility of pregnancy or its cause; results must be interpreted together with the timing of the test, repeated measurements, age, concomitant factors, and causes that were not tested.
- Management may include lifestyle adjustments and review of underlying diseases tailored to the cause and goals, adjustment of the fertile period, review of medications, surgery, and assisted reproductive technology, and psychosocial support.
- Treatment may involve medications, surgery, and assisted reproductive technologies targeting male or female causes, but the appropriate choice varies depending on the cause and individual circumstances.