What could be the reason for the disappearance of chest fullness without the onset of menstruation?

Disappearance of chest distension without the onset of menstruation may indicate pregnancy, which is a physiological phenomenon and does not require special treatment; it could also be due to pathological conditions such as mammary gland hyperplasia or polycystic ovary syndrome, which require prompt diagnosis and treatment according to medical advice. The specific analysis is as follows:

1. Physiological Phenomenon

In women of childbearing age who normally have regular menstrual cycles and engage in regular sexual intercourse, the possibility of pregnancy is high. After conception, hormonal levels change in the body, stimulating breast development and causing chest distension. It is recommended to seek timely medical evaluation. Once pregnancy is confirmed, adequate rest is advised, and no special intervention is necessary.

2. Pathological Conditions

1) Mammary Gland Hyperplasia

Due to mammary gland hyperplasia, hormonal imbalances occur, leading to elevated estrogen and reduced progesterone levels, resulting in breast tenderness. With timely treatment, symptoms can gradually resolve. For severe cases, medications such as Rukuaixiao Capsules, Tamoxifen Citrate Tablets, or Rubisanjie Capsules may be taken under a doctor's guidance to help dissolve breast lumps.

2) Polycystic Ovary Syndrome (PCOS)

Due to reproductive dysfunction and endocrine abnormalities, the body produces excessive androgens while estrogen levels decrease, leading to menstrual irregularities, chest pain, and other symptoms. If the condition progresses, laparoscopic ovarian drilling may be performed as directed by a physician, followed by regular follow-up examinations.

In addition, these symptoms may also be related to mastitis, premenstrual syndrome, or breast cancer. Patients experiencing the above symptoms should seek immediate medical attention to determine the underlying cause and cooperate with appropriate treatments, while maintaining good personal hygiene habits.