"Menstrual irregularities" refers to any changes or abnormalities in a woman's monthly period. This could include issues like having a longer or shorter cycle, heavier or lighter bleeding, or missed periods. Full definition
Thyrotoxicosis can also cause menstrual irregularities, an increase in bowel movements, weight loss, heat intolerance, fatigue, and irritability. (hormone.org)
This herb has been found to be wonderful in aiding women with menstrual irregularities, improving the timing of the entire menstrual cycle. (natural-fertility-info.com)
Underactive or overactive thyroid conditions — hypothyroidism and hyperthyroidism — are associated with a variety of menstrual irregularities. (verywellhealth.com)