Menstrual irregularities are common and can include a variety of patterns such as:
Amenorrhea: Absence of menstruation for more than three cycles. Oligomenorrhea: Infrequent menstruation, with intervals longer than 35 days. Menorrhagia: Heavy menstrual bleeding lasting more than 7 days. Polymenorrhea: Frequent menstruation, with intervals shorter than 21 days. Dysmenorrhea: Painful menstruation with severe cramps.
