Hyperprolactinemia is an elevated level of prolactin in the blood. Prolactin is a hormone that is secreted by the anterior pituitary gland and is important for breast tissue development and for regulating lactation. Hyperprolactinemia occurs when there is too much prolactin being produced, which can be the result of a tumor in the pituitary gland (a prolactinoma) or of a disruption of the mechanisms the body uses to control prolactin production.[1]
What is hyperprolactinemia?
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•Last Updated: May 16, 2025
Hyperprolactinemia is characterized by elevated levels of prolactin in the blood, which is a hormone crucial for breast tissue development and lactation. This condition can arise from a prolactinoma or disruptions in the body's regulation of prolactin production.