hypogonadotropic hypogonadism

hypogonadism /hy·po·go·nad·ism/ (-go´nad-izm) decreased functional activity of the gonads, with retardation of growth, sexual development, and secondary sex characters.

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hypergonadotropic hypogonadism  that associated with high levels of gonadotropins, as in Klinefelter's syndrome.

hypogonadotropic hypogonadism  that due to lack of gonadotropin secretion.

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hypogonadotropic hypogonadism

n.

Defective gonadal development or function due to inadequate secretion of pituitary gonadotropins. Also called hypogonadotropic eunuchoidism.

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hypogonadotropic hypogonadism

Hypogonadotropic eunuchoidism, Kallman syndrome A rare condition with a highly variable hereditary pattern, characterized by secondary hypogonadism–↓ gonadotropin-releasing hormone due to hypothalamic or pituitary dysfunction with testicular failure, and anosmia–due to hypoplasia or aplasia of the olfactory bulbs and tracts, 2º to a defect in the migration of olfactory neurons, and neurons producing GRH–gonadotropin-releasing hormone; ↓ FSH and LH impairs sperm and androgen production Clinical Delayed puberty, micropenis, eunuchoid features, cryptorchidism, midline defects–eg, cleft lip and palate, unilateral renal agenesis, horseshoe kidney, nerve deafness and hearing loss, color blindness, skeletal abnormalities; synkinesia, spatial attention defects, spastic paraplegia, cerebellar dysfunction, horizontal nystagmus, pes cavus, mental retardation Management Androgens to induce anatomic maturation; gonadotropins or LH-releasing factor for spermatogenesis. See Kalig-1.