Low testosterone or testosterone deficiency, also known as hypogonadism, is a condition in which patients develop symptoms.

Low testosterone (hypogonadism) is a condition where your body doesn’t produce enough of the hormone. It has several possible ...

Normosmic idiopathic hypogonadotropic hypogonadism (IHH) and Kallmann syndrome are rare congenital forms of secondary hypogonadism characterized by delayed or absent sexual development.

Testicular atrophy means the testes inside the scrotum ("ball sack") shrink. It is a treatable medical condition. Learn how ...

Testosterone replacement therapy in adult males with congenital or acquired primary hypogonadism or hypogonadotropic ... serum testosterone is below normal range as measured in the AM on at ...

The study enrolled 88 men (60 years or older) with symptoms of hypogonadism and low testosterone ... improved testosterone levels to the mid-normal range and did not alter prostate-specific ...