Hypogonadism

Hypogonadism

Male hypogonadism is defined as a reduction or absence of testosterone secretion or other physiological activity of the testes. Testosterone is the hormone that is responsible for inducing and maintaining male secondary sex characteristics. Male hypogonadism can result from dysfunction of the testicles (referred to as primary hypogonadism), or from disease of the pituitary gland or hypothalamus (referred to as secondary hypogonadism) which then affects the testicular production of testosterone. Hypogonadism can be congenital (present from birth) or acquired.