Meager menstruation may be a sign of disease, so if you have a short time, you should look for the reasons for this state. Not only abundant period , rather, recalls spotting, than a month, and the woman has no need for a day in more than two pads. Check out, that means scarce menstruation, and the reason is. 
Скудные месячные – это короткие менструации (last 1-2 day), when they lost all 30 ml of blood. Right, during menstruation period save from 50 to 150 ml of blood. Miser and a short period may occur during the first 2-3 years after the onset of menarche, then there is a stabilization of hormonal cycle. but, if the amount of blood during menstruation was right, and only in some time was stingy, you must look for the causes of such a state. Little rich period may be the result of medications, symptom of hormonal failures or systemic diseases and disorders of the reproductive organ.
Menstruation and pregnancy
Meager allocation instead of monthly – это может быть связано с беременностью (including ectopic pregnancy). it happens, that pregnant women occur bleeding at the time of menstruation. Therefore, bleeding does not rule out pregnancy, especially if bleeding has another, meaner run, than the previous menstruation.
To determine the actual cause is very meager cycle , it should be noted the level of hormones, do an ultrasound and hysteroscopy.
Mean monthly due to contraceptive pills
Stingy period can occur in women, who take birth control pills. For a typical hormonal contraception is scarce occurrence of menses secretions, It is much more typical, than heavy bleeding. One of the mechanisms of action of hormonal contraception is the braking phase endometrial growth, resulting in menstrual bleeding becoming scarce and short. Nevertheless, нет причин для беспокойства – нет никаких исследований, indicating, to scanty menstruation, caused by contraception, They are threatening the health of women.
Скудные менструации – гормональные нарушения
The reason may be deficient cycle hormonal disorders, associated with polycystic ovary syndrome. In addition to an open and free (every 3-4 of the month) stop cycle, It appears unwarranted weight gain (especially in the waist area), acne on the chest, back, Facial hypertrichosis, hips, buttocks, back. Usually, therapy is recommended to lose weight, потому что жировая ткань – хотя и в небольшой степени – однако вырабатывает гормоны (androgens). If a woman smokes, it must get rid of this habit, since nicotine stimulates the body to make more androgens. In the treatment of polycystic ovary syndrome plays an important immunotherapy.
The reason may be scanty menses state after miscarriage or childbirth, leading to damage to the basal layer of the endometrium and formation of adhesions (syndrome Ashermana), uterine mucosa chronic inflammation.
The reason may be ovarian cyst, which may give symptoms such, how painful ovarian, pain in the abdomen, flatulence, constipation, headache, nausea or vomiting. small cysts, usually, not dangerous and do not require treatment. Large functional cysts, usually, treated with hormonal therapy (usually contraceptives), which should restore the hormonal balance in a woman's body and lead to the elimination of cysts. In some cases, you may need immediate operative intervention.
Symptomatic scarce menses can be hyperprolactinemia (This exceeds the normal level of serum prolactin). It is accompanied by periodic headaches, poor health , irritability and even depression status, chest pain.
It is believed, that scant menstrual bleeding are permissible only in the case, if there is a post-inflammatory changes in the uterine cavity, Some types of thyroid disease, ovarian disease, malnutrition, the use of certain medications.
Scanty menstruation and thyroid disease
Scant menstrual bleeding can be caused by thyroid disease and its function, eg, hypothyroidism - the hypothalamus and pituitary gland is stimulated to release hormones stimulates the thyroid gland to produce thyroxine TRH and TSH; TRH hormone addition, stimulates the pituitary gland to release prolactin, leading to disruption of the menstrual cycle. In turn, hyperthyroidism - a high level of thyroid hormones leads to a rapid loss of body weight despite a good appetite.
Scanty menstruation and excessive exercise
The reason for scant menstruation may be prolonged physical exercise. Heavy-duty and long-lasting workout violate the hormonal balance and rhythm of a woman's cycle and can lead to a cycle of Stopping.
Scanty menstruation and underweight
Too extreme approach to exercise may lead to another problem- underweight body. This is the problem of women with anorexia. Great loss of adipose tissue as a result of anorexia, bulimia or rapid weight loss - this can lead to glaring consequences, stop cycle, which leads to the disappearance of menstruation.
Scanty menstruation caused by stress
How stress, and a significant loss of body weight in a short period of time may be two independent causes menstrual disorders, including one of the symptoms can be irregular menstrual cycles and scanty bleeding.