Meduri, G., P. Touraine, I. Beau, et al. "Delayed Puberty and Primary Amenorrhea Associated with a Novel Mutation of the Human Follicle-Stimulating Hormone Receptor.
The only symptom of primary amenorrhea is delayed menstruation.
Primary amenorrhea refers to not having a menstrual period at the age of puberty.
In secondary amenorrhea, the primary symptom is the ceasing of menstruation for at least three months.
Pregnancy.
In 2003, a group of researchers reported on a new genetic mutation associated with primary amenorrhea.
Typical causes of primary amenorrhea include: excessive physical activity.drastic weight loss.extreme obesity.drugs.chronic illness.turner's syndrome.the absence of a vagina or a uterus.imperforate hymen
In addition to low body weight or excessive exercise, other causes of primary amenorrhea include Turner's syndrome, a birth defect related to the reproductive system, or ovarian problems.
Primary amenorrhea typically occurs when a female has not started her first period by the age of 15-16, or by the age of 13-14 if other signs of puberty are absent. It can be caused by factors such as genetic conditions, hormonal imbalances, or structural abnormalities of the reproductive system.
The beginnings of all related dependent tasks are also delayed.
Primary amenorrhea caused by a congenital condition cannot be prevented.however, women should maintain a healthy diet, with plenty of exercise, rest, and not too much stress, avoiding smoking.However,many cases of amenorrhea cannot be prevented.
If women have genetic or hormonal abnormalities, amenorrhea is often treated with oral contraceptives that contain combinations of estrogen and progestin.
It is the gross primary production - net primary production