While a missed menstrual period is the hallmark of early pregnancy, missing a period can be due to a number of factors and conditions. The term amenorrhea is used by doctors to describe the absence of menstruation. Primary amenorrhea (in which a woman does not begin menstruating) is very rare, while secondary amenorrhea (absence of periods in a previously menstruating woman) is much more common. Periods may also be irregular, with skipped periods, for the first few years after a woman has begun menstruating and in the perimenopause (the time period preceding menopause).
A woman is not considered to have secondary amenorrhea until she has missed three menstrual periods in a row. However, the causes of secondary amenorrhea are generally the same factors or conditions that can lead to a skipped period. If a woman is not pregnant, a missed menstrual period may be due to a wide variety of both physical and emotional conditions that range from lifestyle stress to rare and serious diseases. Many of the conditions that underlie missed menstrual periods interfere with the body's hormonal balance, particularly regarding levels of the sex hormones.
Other causes of missed menstrual period
- Disorders/Infections of the Pelvic Organs
- Extreme Dieting/Malnutrition
- Habitual Strenuous Exercise
- Heavy Tobacco Smoking
- Hormonal Imbalances
- Medications (for Example, Oral Contraceptives, Depo-Provera, Norplant)
- Pituitary Tumors
- Rapid Weight Loss or Gain
- Perimenopause
Main Article on Missed Menstrual Period
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Causes of Missed Menstrual Period
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Anorexia
Anorexia is an eating disorder characterized by markedly reduced appetite or total aversion to food. Anorexia is a serious psychological disorder and is a condition that goes well beyond out-of-control dieting. With anorexia, the drive to become thinner is actually secondary to concerns about control and/or fears relating to one's body. There are psychological and behavioral symptoms as well as physical symptoms of anorexia including: depression, social withdrawal, fatigue, food obsession, heart and gastrointestinal complications, kidney function, flaky skin, brittle nails, and tooth loss (this list is not exhaustive).
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Bulimia
People with bulimia nervosa, an eating disorder that involves episodes of bingeing and purging, experience symptoms and signs such as deteriorating teeth, sore throat, constipation, thinning hair, and dehydration. Treatment of bulimia may involve cognitive behavior therapy, family therapy, nutritional counseling, and medication.
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Early Pregnancy Symptoms: Am I Pregnant?
Pregnancy symptoms can vary from woman to woman, and not all women experience the same symptoms. When women do experience pregnancy symptoms they may include symptoms including missed menstrual period, mood changes, headaches, lower back pain, fatigue, nausea, breast tenderness, and heartburn. Signs and symptoms in late pregnancy include leg swelling and shortness of breath. Options for relief of pregnancy symptoms include exercise, diet, and other lifestyle changes.
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Ectopic Pregnancy (Tubal Pregnancy)
An ectopic pregnancy is a pregnancy located outside the inner lining of the uterus. The majority of ectopic pregnancies occur in the Fallopian tube. Signs and symptoms of an ectopic pregnancy may include abdominal pain, lack of menstrual period (amenorrhea), vaginal bleeding, fainting, dizziness, and low blood pressure. Treatment options for an ectopic pregnancy include observation, medication, or surgery.
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How Can I Stop Prolonged Periods Naturally?
Heavy periods may be a sign of some underlying health condition. Quite often, heavy and prolonged periods may be a result of nutritional deficiencies. There are a few home remedies for a heavy period. Your doctor may use medication or surgery to treat heavy periods.
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How Can You Tell if You're Pregnant if You Have Irregular Periods?
Learn the signs of pregnancy, what causes irregular periods, and when to see a doctor. One common question that teens and women ask is whether they can become pregnant while on their period.
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How Do You Treat Amenorrhea?
Amenorrhea is a medical condition where an adolescent girl or woman stops having their period for three months or longer. Learn more about amenorrhea, its causes, and common treatments.
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How Late Can a Period Be Before You Know You’re Pregnant?
What is a late or missed period, and what can cause it other than pregnancy? Ovulation occurs between days 12 and 20 of your cycle and you are most likely to get pregnant during this fertile window. Learn the early signs of pregnancy and when to take a pregnancy test to get accurate results.
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How Late Can Your Period Be Without You Being Pregnant?
A regular period — or menstrual cycle — is an essential part of a woman's reproductive system. If you test negative for pregnancy seven or more days after a missed period, there may be other medical reasons for your skipped period.
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How Long Does a Hysteroscopy Take?
Hysteroscopy is a procedure performed by a gynecologist to inspect inside of the uterine cavity using a thin tube with a light and camera attached to it. Hysteroscopy can take anywhere between 5 to 30 minutes or longer if a surgical procedure is being performed at the same time. Surgical procedures to treat uterine pathologies can take between 30 minutes to 2 hours as well, depending on the procedure.
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Is It My Period or Implantation Bleeding?
What is the difference between implantation bleeding and your period? What are the differences between early pregnancy and period symptoms?
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Menopause
Menopause is the time in a woman's life when menstrual periods permanently stop, also called the "change of life." Menopause symptoms and signs include hot flashes, night sweats, irregular vaginal bleeding, vaginal dryness, painful intercourse, urinary incontinence, weight gain, and emotional symptoms such as mood swings. Treatment of menopausal symptoms varies and should be discussed with your physician.
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Obesity and Overweight
Get the facts on obesity and being overweight, including the health risks, causes, reviews of weight-loss diet plans, BMI chart, symptoms, causes, surgical and nonsurgical treatments, and medications.
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PMS vs. Pregnancy: Differences and Similarities
Many women have difficulty figuring out if they are pregnant, have PMS, or are about to start their period. The most common signs and symptoms of early pregnancy, PMS, and the start of your period include mood swings, back pain, increased urination, and tender breasts. These three conditions also share other similar signs and symptoms, but there are unique differences between each. Moreover, there are symptoms that only occur if you are pregnant. Early pregnancy symptoms, PMS, and the start of the menstrual period all have common signs and symptoms like mood swings, back pain, and breast pain. Symptoms and signs between the three conditions that may seem similar, but are slightly different include the following: Pelvic or abdominal cramping before or during your menstrual period is normal; however, the cramping of early pregnancy is mild. If you are pregnant, nausea and vomiting, or morning sickness, is common. They are not common symptoms of PMS. Fatigue is common in both, but PMS usually goes away once your period begins. Food cravings or aversions to certain foods are common in both pregnancy and PMS, but if you are pregnant, the cravings or aversions to foods are more specific and intense. You may have spotting or bleeding if you are pregnant or suffering from PMS. When the embryo inserts itself into the uterus (implantation bleeding), you may mistake it as your menstrual period. However, implantation bleeding is much lighter (not enough to soak a pad or tampon) than the heaving bleeding experienced at the beginning of your period. Signs and symptoms that you may have only if you are pregnant include, implantation cramping and bleeding, a white, milky vaginal discharge, and your areolas or nipples darken. The only way to find out if you are pregnant is with a pregnancy test. Home pregnancy test kits are available without a prescription at pharmacies and most grocery stores. Contact a doctor or other health care professional if you think you may be pregnant.
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Prolactinoma (Pituitary Tumor)
Prolactinoma is an adenoma (benign tumor) of the pituitary gland. Causes of many prolactinomas are unknown. Symptoms in women include: changes in menstruation and infertility, decreased libido, or painful intercourse due to vaginal dryness. The most common symptom in men is impotence (erectile dysfunction). Treatments for prolactinomas include medication and surgery.
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Stress
Stress is a normal part of life, but chronic or severe stress can be harmful to your health. Learn what happens in your body when you are stressed and how you can manage your response.
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Vaginal Bleeding
Normal vaginal bleeding (menorrhea) occurs through the process of menstruation. Abnormal vaginal bleeding in women who are ovulating regularly most commonly involves excessive, frequent, irregular, or decreased bleeding. Causes of abnormal may arise from a variety of conditions that may include, uterine fibroids, IUDs, hypothyroidism, hyperthyroidism, lupus, STDs, pelvic inflammatory disease, emotional stress, anorexia nervosa, polycystic ovary syndrome (PCOS), cancers, early pregnancy.
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What Are Polycystic Ovarian Syndrome (PCOS) Symptoms?
Polycystic ovarian syndrome (PCOS), also known by the name Stein-Leventhal syndrome, is a hormonal problem that causes women to have a variety of symptoms including irregular or no menstrual periods, acne, obesity, and excess hair growth. Treatment of PCOS depends partially on the woman's stage of life and the symptoms of PCOS.
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What Are Signs Your Period Is Coming?
Knowing the signs of a period can help you deal with your menstrual symptoms. Learn how to identify the signs of a period, know when to see a doctor, and find treatment for your period symptoms. Pregnancy is the time when a baby develops in the womb. A period is the time in a woman's monthly cycle in which she bleeds and sheds uterine lining. Early pregnancy symptoms may be confused with period symptoms because they can be similar.
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What Are the Side Effects of Having Irregular Periods?
Having irregular periods is a common issue that affects many women. Learn the side effects of having irregular periods, the symptoms of irregular periods, what causes irregular periods, how doctors diagnose irregular periods, and what you can do to treat irregular periods.
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What Can Cause Amenorrhea Other Than Pregnancy?
Amenorrhea is a common issue that affects some women even when they're not pregnant. Learn the signs of amenorrhea, what causes amenorrhea, how doctors diagnose amenorrhea, and what you can do to address amenorrhea.
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Why Am I Having Menstrual Cramps but No Period?
Menstrual cramps may happen even without a period. Learn more about menstrual cramps without a period, when they can happen, what causes them, and what to watch out for. Menstrual cramps are a type of abdominal pain women get when they have their period. Menstrual cramps may occur after running due to dehydration, gastrointestinal problems, hypothyroidism and pregnancy.
Examples of Medications for Missed Menstrual Period
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