Martha Zambrano, an expert in sexual and reproductive rights programs, has warned that debilitating menstrual pain and heavy bleeding should never be considered normal.
Zambrano explained that persistent menstrual irregularities can be caused by underlying medical conditions, including metabolic syndrome, hormonal disruptions, uterine growths, and pelvic infections. She stressed the importance of identifying root causes early to protect long-term health and fertility.
Common medical conditions altering cycles
Among the primary medical causes of menstrual changes is polyendocrine metabolic ovarian syndrome, previously known as polycystic ovary syndrome. The condition was renamed in 2026 to reflect that it involves complex hormonal, metabolic, and reproductive disruptions rather than simple ovarian cysts. The syndrome can cause irregular menstrual cycles, ovulatory changes, elevated androgen levels, and metabolic variations requiring comprehensive clinical evaluation.
Polyendocrine metabolic ovarian syndrome is one of the most widespread hormonal disorders among women of childbearing age. It is frequently associated with insulin resistance and an increased risk of long-term metabolic health complications.
Zambrano noted that menstrual alterations are also linked to thyroid disorders, endometriosis, adenomyosis, uterine fibroids, and pelvic infections. Thyroid disorders can alter the frequency and heavy flow of bleeding because thyroid hormones interact directly with female reproductive function.
Endometriosis occurs when tissue similar to the lining of the uterus grows outside the organ, while adenomyosis involves endometrial tissue invading the muscular wall of the uterus. Uterine fibroids are non-cancerous muscular growths that develop inside or around the womb. Both conditions frequently cause severe pelvic pain and abnormal bleeding patterns.
Warning signs and red flag symptoms
Zambrano emphasized that menstruation should not force women to live with debilitating discomfort. Medical consultations are recommended when pain prevents women from studying, working, sleeping, or completing ordinary daily tasks.
Additional warning signs include bleeding that lasts longer than seven days, unusually heavy flow, or bleeding that occurs between menstrual periods. Women should also seek medical advice if they experience persistent pelvic pain, dizziness, marked fatigue, or any significant shift from their established menstrual baseline.
Intense menstrual pain and excessive bleeding are frequently associated with conditions such as endometriosis. Zambrano cautioned that ignoring these symptoms can significantly impair quality of life.
Lifestyle and non-medical factors
Not every shift in a menstrual cycle indicates an underlying illness. Zambrano explained that severe stress, major weight fluctuations, excessive physical exercise, and insufficient nutrition can also alter menstrual frequency, duration, or flow.
Menstrual patterns can also be modified by pregnancy, breastfeeding, certain medications, and hormonal contraceptives. Natural biological transitions, such as adolescence and the perimenopausal phase preceding menopause, also alter normal bleeding routines.
Rather than comparing cycles with others, Zambrano advised women to understand their individual menstrual patterns and track persistent changes. Keeping a detailed record of bleeding and accompanying symptoms provides valuable information for clinical evaluations.
Medical tests and diagnostic procedures
Diagnosing menstrual alterations requires a tailored clinical approach rather than a single standardized test. Evaluation begins with a detailed medical history covering cycle characteristics, bleeding volume, pain levels, current medications, background history, and potential pregnancy.
Depending on individual cases, healthcare providers may order physical examinations, pregnancy tests, complete blood counts to check for anemia, and comprehensive hormone panels. Thyroid function testing and pelvic ultrasounds are also commonly utilized to pinpoint underlying causes.
Early diagnosis and treatment options
Normalizing abnormal pain or bleeding often delays medical diagnosis for years. According to the World Health Organization, diagnosing endometriosis can take between four and 12 years from the onset of symptoms.
The World Health Organization is the specialized agency of the United Nations responsible for directing and coordinating international public health policies and standards.
Zambrano explained that timely diagnosis allows healthcare providers to manage symptoms, prevent complications, and safeguard reproductive health. Treatment options vary based on patient needs and can include lifestyle modifications, pain or bleeding medications, hormonal therapies, management of metabolic or thyroid issues, surgery, or fertility treatments. She concluded that menstruation serves as a key indicator of overall health, and persistent symptoms should prompt immediate medical evaluation.
