$Unique_ID{BRK02341} $Pretitle{} $Title{What Are the Causes of Irregularly Menstrual Periods?} $Subject{monthly menstrual periods period ovulating ovulation fertilization cervix cervical mucous ovary releases middleschmertz hormone levels hormonal anorexia nervosa irregular abnormal thyroid function polycystic ovaries ovary tumors adrenal glands infertile infertility problems anovular vicarious retrograde menstruation genitourinary system uterus vagina fallopian tube tubes menstruate menstruating cycle fertile fertility sterile sterility} $Volume{J-14} $Log{ Diseases of the Female Reproductive System*0009001.scf The Menstrual Cycle*0009101.scf} Copyright (c) 1992,1993 Tribune Media Services, Inc. What Are the Causes of Irregularly Menstrual Periods? ------------------------------------------------------------------------------ QUESTION: Though most of my girl friends confide that their monthly periods are like clockwork, mine are never on time, never seem the same, and seem all wrong. I am becoming very anxious and wonder if there is anything you can tell me about my condition. What can be done to help me? ------------------------------------------------------------------------------ ANSWER: It's hard to tell from your question exactly what the problem is. It sounds like you're complaining of irregularly spaced menstrual periods. If that's the case, you and your doctor will probably want to evaluate whether you are ovulating properly, since normal menstrual bleeding follows ovulation by two weeks if fertilization does not occur. There are a variety of ways to determine whether you are ovulating. Many women identify a change in the cervical mucous when ovulation occurs. Some women spot slightly and feel a pain in the lower abdomen when the ovary releases its monthly egg. This has been given the descriptive name of "middleschmertz" ( or "middle pain"). Basal body temperature rises by about 0.5 degrees F. at ovulation, and remains elevated until menstrual bleeding begins. Taking your temperature each morning with a basal body temperature thermometer, carefully following its directions, will help to tell you whether you are ovulating. There are also several self-test kits on the market which, when used properly, can tell you whether you are ovulating. If your doctor feels your problem warrants more investigation, he may perform blood tests to check your hormone levels. Hormonal therapy can be ordered to solve the problem, but hormones should be prescribed carefully. If you're not ovulating, what could the problem be? Stress, the culprit for so many other ills, can shut down ovulation. Emotional stress and physical stress, such as that induced by extreme exercise or illness, can change your hormonal levels enough so that ovulation is often stopped until the problem is resolved. Women with anorexia nervosa often stop ovulating. Obese women often stop ovulating until they lose weight. Body fat can produce estrogen, and the excess upsets the body's hormonal balance. The result is no ovulation, irregular periods and an increased risk for cancer of the lining of the uterus. Women with abnormal thyroid function, especially those with a low thyroid production, often do not ovulate. Treatment with thyroid medication usually solves this problem. Some women who do not ovulate have polycystic ovaries. Polycystic ovaries are enlarged and contain many partially mature but unreleased eggs. Drug therapy can usually correct this problem. Tumors of the ovary or adrenal glands may cause ovulation problems, but they're rare. If no other problems are found, this possibility should be checked. Not ovulating or irregular ovulation obviously causes infertility problems. Ovulation problems that are causing infertility can sometimes be treated successfully with hormonal therapy. As you can see from my answer, irregular periods can be more than just a nuisance. If you are experiencing irregular menstruation, you should be thoroughly and completely evaluated, because menstrual problems may often be a signal that something else is wrong. ---------------- The material contained here is "FOR INFORMATION ONLY" and should not replace the counsel and advice of your personal physician. Promptly consulting your doctor is the best path to a quick and successful resolution of any medical problem.