What causes irregular menstruation in a 14-year-old girl?

Generally speaking, menstrual irregularity in 14-year-old girls may be caused by factors such as immature pubertal development, anemia, hyperthyroidism, endometritis, or polycystic ovary syndrome (PCOS). It is recommended to seek medical attention promptly, identify the underlying cause, and receive symptomatic treatment under the guidance of a qualified physician. Specific analysis is as follows:

1. Immature Pubertal Development: Girls at age 14 are typically in the stage of pubertal development. At this time, ovarian function has not yet fully matured, and hormone secretion levels may be unstable, which can lead to irregular menstrual cycles. This is a normal physiological phenomenon. As the girl grows older, ovarian function gradually improves and menstruation will become more regular over time. There is usually no need for excessive concern.

2. Anemia: Anemia may be related to poor diet, reduced red blood cell production, or other factors. It can lead to physical weakness in girls, affecting the normal menstrual cycle and causing menstrual irregularities, often accompanied by pallor. It is recommended that girls follow medical advice to use medications such as dextran iron injection, compound ferrous sulfate granules, or dextran iron tablets for treatment.

3. Hyperthyroidism: This condition may be associated with excessive stress or environmental stimuli. When present, the body may produce too much thyroid hormone, which can disrupt the menstrual cycle, leading to symptoms such as early or delayed periods and reduced menstrual flow. It is recommended that girls follow medical instructions to take medications such as metoprolol tartrate tablets, Prunella vulgaris granules, or Xiaojin pills to alleviate symptoms.

4. Endometritis: This may be caused by poor personal hygiene or using unclean sanitary pads during menstruation. Common symptoms include lower abdominal pain, increased vaginal discharge, and menstrual abnormalities. It is recommended that girls strictly follow medical advice to use medications such as Fule tablets, Jingangteng capsules, or tinidazole capsules for treatment.

5. Polycystic Ovary Syndrome (PCOS): This may result from multiple factors including genetic predisposition and environmental stimuli. After onset, multiple small follicles may develop in the ovaries but fail to mature and ovulate, leading to menstrual cycle disturbances. Common manifestations include infrequent menstruation, irregular periods, or amenorrhea. It is recommended that girls use medications such as progesterone capsules, dydrogesterone tablets, or letrozole tablets under a doctor's supervision to improve symptoms.

In daily life, it is important to maintain a regular sleep schedule and avoid staying up late. A balanced diet rich in iron-containing foods such as red dates and spinach is beneficial. Engaging in moderate outdoor activities can help relax the mind and relieve discomfort.