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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 .
Outside of the reproductive years there is absence of menses during childhood and after menopause. [8] Irregular menstruation is where there is variation in menstrual cycle length of more than approximately 8 days for a woman. The term metrorrhagia is often used for irregular menstruation that occurs between the expected menstrual periods. [9] [10]
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]
The symptoms of hypogonadotrophic hypogonadism, a subtype of hypogonadism, include late, incomplete or lack of development at puberty, and sometimes short stature or the inability to smell; in females, a lack of breasts and menstrual periods, and in males a lack of sexual development, e.g., facial hair, penis and testes enlargement, deepening ...
Exercise-related factors generally affect athletes who participate in sports that require intensive training and a low body weight, causing a net energy deficiency. [4] [6] FHA due to excessive exercise has been defined as an at least 6-month absence of menses in otherwise healthy females lacking chronic severe illness who exercise eight or ...
Aromatase deficiency is a rare condition characterized by extremely low levels or complete absence of the enzyme aromatase activity in the body. [2] It is an autosomal recessive disease resulting from various mutations of gene CYP19 (P450arom) which can lead to ambiguous genitalia and delayed puberty in females, continued linear growth into adulthood and osteoporosis in males and virilization ...
Hypoestrogenism, or estrogen deficiency, refers to a lower than normal level of estrogen. It is an umbrella term used to describe estrogen deficiency in various conditions. Estrogen deficiency is also associated with an increased risk of cardiovascular disease, [1] and has been linked to diseases like urinary tract infections [2] and osteoporosis.
Anovulation due to a low thyroid hormone level, high prolactin level, high insulin level, high androgen level and problems with other hormone can also cause scanty periods. Despite these common causes, hypomenorrhea is still technically an abnormality of the menstrual flow, and other underlying medical problems should be ruled out by a doctor.