Dysmenorrhea is a condition in which the patient feels severe pain in the abdomen in the days preceding the menstural cycle. Other symptoms may include nausea, headache, tendency to vomit, diarrhea etc.
There are two types of dysmenorrhea, primary and secondary. Primary is when there is no pathological damage to the pelvis, such as endometriosis. Secondary is diagnosed when endometriosis and other such conditions is present.

A common theory that can explain dysmenorrhea has to do with increased receptors that connect with prostaglandins during menstrural cycle. This sense of receptors makes myomitrio more sensitive so its contractions could actually be responsible for pelvic pain.
In cases of endometriosis or adenomyosis the treatment could be drug therapy based on taking contraceptive pill and inflammatory that can be very helpful in such situations. Furthermore, even though it is not quite often, it has been proven that stenoses that could be found in the inner cervical orifice or even in the outside the cervical neck may be responsible for dysmenorrhea. In these cases what the expansion would eliminate or reduce the problem significantly.
Many times due to bad advice from doctors other than gynecologists or because women do not visit their gynecologist in order treat such problems, they spend a lifetime without finding a solution for this problem. An other issue is that common sense is that a woman must suffer during her period (and that is something normal) and that is also responsible for this problem not being solved.

A clinical example, is about a 42 year old woman that after 4 years of sluggishness visited her gynecologist to address the problem she experienced during insemination, and discovered that the cervical orifice was almost impassable. This chronic dysmenorrhea issue was due to stenosis and this problem was treated after stithoskopisis and dilation of the cervical orifice.