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Which conditions can disrupt the hormone signals involved in menstruation?
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menstruation
Cyclical changes during a woman's normal ovulatory menstrual cycle.
The menstrual cycle relies on an intricate hormonal balance between the hypothalamus, pituitary gland, ovaries, and uterus. Any disruption in this chain of events can lead to menstrual irregularities or amenorrhea (the failure to menstruate).1
Conditions that can disrupt these signals include:
- Hormonal Imbalances and Excess: Polycystic ovary syndrome (PCOS) is a common cause, often involving androgen excess and insulin resistance, which can suppress ovulation. Other causes include adrenal disorders (such as Cushing syndrome or congenital adrenal hyperplasia) and ovarian tumors.21
- Hypothalamic Disturbances: Emotional shock, anxiety, fear, or injuries to the midbrain can disrupt hypothalamic function. Additionally, nervous system infections like meningitis or encephalitis may interfere with these signals.1
- Systemic and Lifestyle Factors: Dietary deficiencies resulting from anorexia nervosa or bulimia nervosa, as well as excessive exercise and obesity, can disrupt the hormonal axis.1
- Other Causes: Pituitary tumors, the use of certain medications (such as psychotropic drugs or contraceptives), and structural obstructions of the vagina can also impact the cycle.1