Aunt, how long is it normal to delay?

In general, menstruation delayed within a week, are normal phenomena, generally do not deliberately treat. The normal cycle of menstruation is generally 21 days to 35 days, such as more than 35 days that delayed more than a week for menstruation. There are many reasons for menstruation delay, the most common are: mental stress, psychological burden, too much stress, insufficient rest, etc., can lead to hypothalamic dysfunction, leading to menstruation delay. Ovarian problems, affecting ovulation, can also lead to delayed menstruation. In addition, if the patient's endometrium is destroyed, suffering from inflammation, tuberculosis, tumor, etc., menstruation will also be delayed. Should go to the hospital in time to check, identify the cause, according to the results symptomatic treatment.