The cause of PCOS is not known, but sometimes runs in families. The symptoms are related to abnormal hormone production (hence the term hormone imbalance). The diagnosis is made following typical symptoms, hormone tests and ultrasound imaging of the ovaries.
Going for a whole year without periods is certainly abnormal. In fact, in the absence of pregnancy or use of certain contraceptives, an explanation should always be sought if periods disappear for a period of 3 to 6 months.
Rare causes of male infertility
These include specific testicular diseases, hormonal problems, genetic causes, other medical conditions, and even complex genetic syndromes.
These tend to be rare causes, and require extensive diagnostic tests.
This is the commonest cause of female infertility locally. Tubes may be blocked following sexually transmitted infections (STIs), other pelvic infections, or even after pelvic surgery. Tests to check the tubes are easily available.