The climacteric mastalgia you are experiencing, particularly the symptoms appearing after hormone replacement therapy, is very common, and many people struggle with it. In menopause, the secretion of female sex hormones, namely estrogen and progesterone, drops sharply, leading to uncomfortable symptoms such as facial flushing, night sweats, and vaginal dryness. Hormone replacement therapy is initiated to relieve these symptoms, but these hormones can affect breast tissue and cause pain.
The breasts are tissues rich in estrogen and progesterone receptors. When hormones are supplied externally through hormone replacement therapy, they act on the breast's mammary gland tissue, lactiferous ducts, and supporting stromal cells. In particular, estrogen tends to stimulate the proliferation of mammary gland tissue, while progesterone promotes the maturation of lobules. During this process, blood flow volume within the breast tissue increases, and subtle edema or fluid retention may occur. Just like a water balloon swelling up, the breasts become taut, which compresses nearby nerves and heightens sensitivity, frequently leading to pain.
This pain usually appears a few weeks to a few months after starting hormone replacement therapy, and in cyclical hormone replacement therapy, the pain may worsen around the same time each month, similar to premenstrual syndrome. Combined hormone therapy with estrogen and progesterone used together is known to have a higher likelihood of causing mastalgia than estrogen-only therapy. Furthermore, the intensity of pain can vary depending on the type of medication, route of administration, and dosage.
It is not simply due to hormones alone. Hormonal changes can trigger an inflammatory response within breast tissue or influence the balance of neurotransmitters that regulate pain sensations. These complex factors work together to increase breast sensitivity and induce tenderness. Of course, besides hormone replacement therapy, mastalgia can also be a sign of fibrocystic changes, mastitis, or rarely other serious conditions, so if the pain is severe or persists, it is important to consult your attending physician for an accurate diagnosis. If the pain is caused by hormone replacement therapy, adjusting the dose, changing the medication, or considering other treatments can be explored. Let us find a wise solution together for your comfortable climacteric.
