Overview
Female infertility is defined as the inability to achieve pregnancy after one year of regular unprotected intercourse, or after six months in women aged 35 years or older. According to the presentation, female factors contribute to approximately forty percent of infertility cases, and male and female causes often coexist.
Evaluation begins after six to twelve months of unsuccessful attempts and focuses on assessing ovulation, ovarian reserve, tubal patency, uterine cavity health, and systemic or hormonal factors. Blood tests and imaging studies guide diagnosis and treatment.
Screening for conditions such as PCOS and thyroid dysfunction is essential. A structured approach based on five pillars ensures systematic evaluation and targeted management.
Symptoms
Infertility itself is the primary presentation, characterized by failure to conceive within the defined time frame. Irregular ovulation may be suspected when menstrual cycles are inconsistent. Hormonal imbalances such as thyroid dysfunction or elevated prolactin can disrupt normal ovulatory cycles.
Features of androgen excess, including elevated testosterone or DHEAS, may suggest PCOS. Recurrent pregnancy loss may indicate genetic, autoimmune, or thrombophilic causes. Chronic endometritis may remain silent but create a hostile uterine environment for implantation.
Causes
The presentation outlines five main pillars underlying female infertility. Ovulatory dysfunction is evaluated using mid-luteal progesterone levels, ovulation predictor kits detecting LH surge, basal body temperature charting, and serial transvaginal ultrasound, which is considered the gold standard.
Ovarian reserve decline is assessed by AMH, Day 3 FSH, Estradiol, and Antral Follicle Count. High FSH or Estradiol levels and low AMH suggest diminished reserve, while high AMH may indicate PCOS.
Tubal factors are assessed by HSG, saline sonography, laparoscopy, and chromopertubation, which confirm tubal patency and identify blockages or adhesions. Uterine cavity abnormalities such as polyps, fibroids, or scars are detected through saline sonography and hysteroscopy.
Systemic and hormonal causes include thyroid imbalance, hyperprolactinemia, insulin resistance, elevated androgens, and vitamin D deficiency.
Additional causes may include inherited thrombophilia, autoimmune antibodies such as antiphospholipid antibodies, genetic abnormalities including karyotype defects, FMR1 premutation, CFTR mutation, and chronic endometritis diagnosed by CD138 staining on endometrial biopsy.
Risk Factors
Age above thirty-five years increases the urgency of evaluation. Family history of early menopause or intellectual disability raises suspicion for genetic causes. Recurrent miscarriage or implantation failure indicates the need for thrombophilia screening or autoimmune testing.
Primary ovarian insufficiency before the age of 40 warrants genetic evaluation. PCOS, insulin resistance, and metabolic disturbances contribute to infertility risk. Chronic infections such as Chlamydia trachomatis may cause tubal damage. Structural abnormalities of the uterus and endometrial inflammation impair implantation. Timing of hormonal testing is crucial: Day 2–5 testing for FSH, LH, Estradiol, and AMH; mid-luteal progesterone testing around Day 21; and other hormones measured as indicated.
Prevention
Early and systematic evaluation improves outcomes. Following the five-pillar approach ensures a comprehensive assessment of ovulation, ovarian reserve, tubal patency, uterine cavity, and systemic health. Timely hormonal testing according to menstrual phase enhances diagnostic accuracy.
Screening for thyroid dysfunction, prolactin imbalance, insulin resistance, and androgen excess allows correction of reversible causes. Treating infections and chronic endometritis improves implantation success. Genetic counseling is essential when abnormalities are detected. Integrating laboratory findings with ultrasound, HSG, and laparoscopy when required supports a multidisciplinary approach involving gynecologists, endocrinologists, geneticists, and nutritionists.
Combining multiple approaches toward a single target increases the likelihood of achieving pregnancy while ensuring cost-effective care.
