<unk>  is an example of hypogonadism (decreased functioning of the sex hormone-producing glands) caused by a deficiency of gonadotropin-releasing hormone (GnRH), which is created by the hypothalamus.<unk>  is also known as hypothalamic hypogonadism, familial hypogonadism with anosmia, or hypogonadotropic hypogonadism, reflecting its disease mechanism.<unk>  is a form of secondary hypogonadism reflecting the fact the primary cause of the defect in sex hormone production lies within the pituitary and hypothalamus rather than a physical defect of the testes or ovaries themselves.
Kallman syndrome
Kallmann syndrome
Angelman syndrome
Kostmann syndrome
Wolman disease
Gitelman syndrome
Gerstmann syndrome
Klinefelter's syndrome