There are two subtypes of<unk> , congenital<unk>  (CHH) and acquired<unk>  (AHH). CHH is due to genetic abnormalities resulting in non-functional GnRH secreting neurons or gonadotropic cell dysfunction in the anterior pituitary. CHH is divided into 2 subtypes depending on the condition of the olfactory system, anosmic<unk>  (Kallman syndrome) and normosmic<unk> . AHH is an acquired form of the disease often occurring after sexual maturation and is not related to genetic defects.
Hypogonadotropic hypogonadism
Hypergonadotropic hypogonadism
Late-onset hypogonadism
Isolated hypogonadotropic hypogonadism
Polyorchidism
Hypergonadotropic hypergonadism
Microorchidism
Dual-role transvestism