- Primary ovarian insufficiency (POI) is a condition characterized by the normal decline of ovarian function before the age of 40; unlike premature menopause, intermittent menstruation or the possibility of pregnancy may remain.
- The cause is usually unidentified, but genetic disorders, autoimmune diseases, anticancer chemotherapy/radiation therapy, metabolic diseases, and some toxic exposures may be involved.
- The core dysfunction is the premature depletion or improper functioning of follicles, which affects follicular growth, maturation, and ovarian hormone production.
- Representative manifestations include irregular or ceased menstruation, difficulty with pregnancy, hot flashes, night sweats, vaginal dryness, dyspareunia, decreased libido, and decreased concentration.
- Family history, specific genetic changes such as Turner syndrome or Fragile X syndrome, autoimmune diseases, certain viral infections, and cancer treatments can increase the risk, and individual causes and progressions vary.
- Symptoms may begin with changes in menstruation and may become similar to menopause over time; infertility, osteoporosis, cardiovascular disease, hypothyroidism, ocular surface disease, and risks of anxiety/depression may accompany these conditions.
- Diagnosis is determined by comprehensively evaluating medical and family history, confirming pregnancy status, physical examination, hormone blood tests, and, if necessary, chromosomal analysis and pelvic ultrasound.
- Since intermittent menstruation or the possibility of ovulation may remain, judgment should not be made based on a single menstrual pattern alone; other causes such as pregnancy, thyroid disease, and autoimmune disease must also be evaluated.
- Management aims to alleviate symptoms and reduce long-term health risks, with individual assessments of hormone status, bone and cardiovascular health, mental health, and comorbidities.
- There is no established treatment to normally restore current ovarian function; when appropriate, menopause hormone therapy is used for symptom management and risk management related to hormone deficiency.