Hypogonadism is a condition where the sexual glands, called gonads (testes in men and the ovaries in women), produce little or no hormones (testosterone in men and oestrogen in women). You may be born with hypogonadism or it can develop later in life as a result of an injury or infection.
There are two types of the condition, primary hypogonadism and secondary hypogonadism:
Primary hypogonadism
Primary hypogonadism is where your gonads (testes in men or ovaries in women) do not work normally so do not produce enough testosterone or oestrogen.
Secondary hypogonadism
Secondary hypogonadism occurs when the pituitary gland in your brain doesn’t produce the hormones needed to stimulate the gonads to function as they should.