A 17-year-old adolescent boy who reports to his physician that he is incapable of obtaining an erection is also quite embarrassed by the apparent enlargement of his breasts (gynecomastia). These symptoms, when present in males, are associated with an excessive production of which of the following hormones?

Question

Quizplus · Accepted Answer

Excessive production of prolactin in males can lead to symptoms such as erectile dysfunction and gynecomastia due to its effects on reducing testosterone levels and increasing estrogen levels.  Prolactin is necessary for initiation and maintenance of lactation. Physiologic levels act only on breast tissue primed by female sex hormones. Endocrine dysfunction leading to excessive prolactin production is associated with breast enlargement and impotence in males.

A 17-Year-Old Adolescent Boy Who Reports to His Physician That