Reproductive endocrinology, fertility and contraception
Locate the endocrine disturbance
The hypothalamic, pituitary, ovarian and endometrial components of the reproductive axis must be considered together. Estradiol feedback changes across the cycle, while progesterone production after ovulation reflects corpus-luteum activity. Tonic dopamine inhibition helps explain prolactin physiology. Pregnancy should be considered in secondary amenorrhea before assigning a chronic endocrine diagnosis. Primary amenorrhea is assessed through the actual uterine anatomy, secondary sexual characteristics and relevant endocrine or genetic findings. Normal breast development does not prove that a uterus is present.
Distinguish ovulation from reserve
Ovarian-reserve measurements and ovulation assessment answer different questions. AMH and antral-follicle count can contribute to estimating follicle quantity and likely stimulation response; they do not by themselves prove that ovulation occurred, determine oocyte quality or guarantee natural conception. Infertility assessment considers the relevant male factor, ovulatory function and reproductive-tract anatomy. The need for a particular test depends on the history and findings rather than a mandatory identical panel for every couple. Premature ovarian insufficiency should be interpreted using a current specified diagnostic framework, with repeat testing where uncertainty remains instead of repeating an obsolete universal two-test rule.
Connect syndrome and treatment goals
PCOS assessment considers hyperandrogenism, ovulatory dysfunction and appropriate morphology or other accepted diagnostic components after excluding competing causes. An elevated LH-to-FSH ratio is not a required diagnostic criterion. Treatment for symptoms, endometrial protection, metabolic risk or anovulatory infertility addresses different goals. A method that suppresses ovulation may help pain while being incompatible with an immediate attempt to conceive. Ovarian stimulation and assisted reproduction can have complications, including ovarian hyperstimulation through altered vascular permeability. More follicles or a higher hormone value is not automatically a better outcome.
Contraception and menopausal care
Combined hormonal, progestin-only and intrauterine methods differ in mechanisms, contraindications, use requirements and benefits. A named medical-eligibility framework can identify unacceptable risk in settings such as migraine with aura, without making every nonestrogen method identical for every patient. Copper intrauterine contraception chiefly impairs fertilization rather than terminating an established implanted pregnancy. Emergency contraception and ongoing protection require accurate counseling about the actual method and follow-up. Menopausal treatment separates vasomotor symptoms from genitourinary symptoms and incorporates uterine status, bleeding, risk and preferences. Unopposed systemic estrogen in a person with an intact uterus is not interchangeable with local treatment or a properly selected endometrial-protection strategy.