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Adult-onset idiopathic hypogonadotropic hypogonadism (AHH) is a rare disorder characterized by an isolated failure of gonadotropin secretion occurring after an otherwise normal sexual maturation in men. This study aims to examine the etiology and long-term natural history of this disorder.

The Long-Term Clinical Follow-Up and Natural History of Men with Adult-Onset Idiopathic Hypogonadotropic Hypogonadism