Adolescent girls rarely produce lactation

　　Breasts do not secrete milk during development. The reason should start with the source of prolactin. Prolactin is produced from an endocrine gland in the human brain, called the cells of the pituitary gland (about one gram in size, shaped like a broad bean). However, it is also controlled by the prolactin inhibitory factor secreted by the hypothalamus, which limits the secretion of prolactin by the pituitary gland. Therefore, lactation is a special function of maternal childcare. Most women, especially adolescent girls, do not have lactation function.

　　Lactation is abnormal

　　There are two reasons for this abnormality: one is the occurrence of prolactin gonad tumors in the pituitary gland； Second, although prolactin tumors have not occurred, because the pituitary gland cells are stimulated by the prolactin-promoting factor secreted by the hypothalamus, excessive prolactin secretion is called hyperprolactinemia.

　　In addition to galactorrhea, patients with hyperprolactinemia are often accompanied by varying degrees of menstrual disorders. In severe cases, they may even experience menstrual disorders. amenorrhea , hair loss, weight gain, headache, visual impairment, external genital atrophy and other symptoms, forming a group of diseases with the main manifestations of galactorrhea, amenorrhea, and infertility, also known as "galactorrhea-amenorrhea syndrome". However, no matter how severe the symptoms are, the main reason is due to excessive production of prolactin. There are many causes of hyperprolactinemia, which can be roughly divided into the following categories: hypothalamic disorders, pituitary disorders, primary hypothyroidism, drug factors, nerve Stimulation etc.

　　Further diagnosis can be made through head CT or MRI and measurement of serum prolactin levels. If there is a tumor, it can be treated with Gamma Knife, and it can be cured without craniotomy. If it is not a tumor, but just hyperprolactinemia, you can just take symptomatic medicine, but it must be taken under the guidance of a doctor.

　　Learn to self-examine your breasts

　　Before the ovary secretes progesterone, the development of glandular lobules is extremely limited. After sexual maturity, especially during pregnancy, the gland lobules can fully develop under the combined and repeated effects of progesterone and estrogen. The development of glandular lobules requires a certain intensity of hormonal stimulation and the action of an appropriate proportion of estrogen and progesterone. Otherwise, the epithelial cells of the terminal milk ducts are prone to abnormalities, such as cystic hyperplasia.