Breast hyperplasia causes breast pain when lying flat during sleep.

Breast hyperplasia causing breast pain when lying flat during sleep may result from physiological causes or pathological factors such as hormonal changes and mammary glandular lobules. It is recommended to seek medical attention promptly and undergo relevant examinations.

I. Physiological Causes

When lying flat, the weight of the breasts spreads out, and the breast tissue and ducts may become compressed, potentially leading to breast pain and discomfort. In addition, improper sleeping posture may impair blood circulation, further aggravating the discomfort. This can be alleviated by wearing sleepwear or a properly fitted bra before bedtime and maintaining a good sleeping posture.

II. Pathological Causes

1. Hormonal Changes

Hormone levels in women constantly fluctuate, which may lead to breast tissue proliferation and swelling, stimulating surrounding nerve endings and causing breast pain. Generally, no specific treatment is required. Symptoms can be relieved through a balanced diet, moderate exercise, and stress reduction.

2. Mammary Glandular Lobules

These refer to the small glandular structures within the breast, also known as mammary lobules. When the growth of these lobules is obstructed—such as when breast tissue becomes compressed during supine sleep—breast pain may occur. After diagnosis by a physician, medications such as ibuprofen capsules, aspirin capsules, or oral vitamin E solution may be prescribed.

Besides the above, inflammation of the breast ducts may also cause this symptom. It is recommended to seek timely medical evaluation and appropriate examinations.