Male hypogonadism is a clinical syndrome resulting from decreased production of testosterone (T4), sperm, or both, and can be caused by congenital or acquired disorders. Depending on the cause, hypogonadism is classified as primary or secondary.
Testicular torsion is an emergency and can lead to primary hypogonadism. Testicular torsion begins suddenly, and patients experience intractable pain due to decreased blood supply to the testicles. Testicular torsion also causes injury to germ cells, depending on the ischemia and severity of cord twisting.