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The lack of menstruation usually begins shortly after beginning the medication and can take up to a year to resume after stopping its use. [41] Hormonal contraceptives that contain only progestogen, like the oral contraceptive Micronor, and especially higher-dose formulations, such as the injectable Depo-Provera , commonly induce this side effect .
Menstrual Cycle including Menstrual phase (often referred to as "period") A menstrual disorder is characterized as any abnormal condition with regards to a woman's menstrual cycle. There are many different types of menstrual disorders that vary with signs and symptoms, including pain during menstruation, heavy bleeding, or absence of menstruation.
Constitutional scanty menstruation is perhaps best explained by assuming the presence of an unusual arrangement, or relative insensitivity, of the endometrial vascular apparatus. Reduced menstrual flow is a common side-effect of hormonal contraception methods, such as oral contraceptive pills, IUDs that release hormones (such as Mirena ), or ...
In the United States, the age of onset of puberty in girls depends heavily on their racial background. Delayed puberty means the lack of breast development by age 12.8 years for White girls, and by age 12.4 years for Black girls. [7] [8] The lack of menstruation by age 15 in any ethnic background is considered delayed. [8]
[4] [9] However, studies have shown that even during this period, the length of a menstrual cycle does not exceed 45 days. [4] [9] Furthermore, healthy girls with normal BMI (18.5–24.9 kg/m 2) should develop regular menstrual cycles (every 28 +/- 3–5 days) within 1–2 years after menarche.
Premenstrual syndrome (PMS) is a disruptive set of emotional and physical symptoms that regularly occur in the one to two weeks before the start of each menstrual period. [4] [5] Symptoms resolve around the time menstrual bleeding begins. [4]
Polymenorrhea, also known as frequent periods, frequent menstruation, or frequent menstrual bleeding, is a menstrual disorder in which menstrual cycles are shorter than 21 days in length and hence where menstruation occurs more frequently than usual. [1] [2] [3] Cycles are regular and menstrual flow is normal in the condition. [3]
Hormonal therapies to reduce or stop menstrual bleeding have long been used to manage a number of gynecologic conditions including menstrual cramps (dysmenorrhea), heavy menstrual bleeding, irregular or other abnormal uterine bleeding, menstrual-related mood changes (premenstrual syndrome or premenstrual dysphoric disorder), and pelvic pain due to endometriosis or uterine fibroids.