Irregular Periods: Causes and When to Seek Help - Obstetrics and Gynecology

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Regarding the menstrual period?


Hello, Doctor: My last menstrual period started on July 5th and lasted for twenty days.
It has not returned since then.
Excluding pregnancy, what could be the possible reasons? Is it likely to return to normal after a while? What tests or treatments might be necessary? Thank you for your response.

Yan Zi, 20~29 year old female. Ask Date: 2008/10/05

Dr. Huang Jianxun reply Obstetrics and Gynecology


It is possible that there is a temporary menstrual irregularity.
Please continue to track your menstrual cycles for a few more months, but if it becomes a regular occurrence, seek medical attention to determine the cause.

Reply Date: 2008/10/05

More Info


Irregular menstrual periods can be concerning, especially when they deviate from your normal cycle. In your case, since your last period started on July 5 and lasted for twenty days, followed by a prolonged absence, there are several potential causes to consider.
Firstly, it’s important to understand that menstrual cycles can be influenced by a variety of factors, including hormonal imbalances, stress, significant weight changes, and underlying medical conditions. Here are some common causes of irregular periods:
1. Hormonal Imbalances: Conditions such as polycystic ovary syndrome (PCOS) can lead to irregular periods. Hormonal fluctuations can also occur due to changes in thyroid function, which can affect menstrual regularity.

2. Stress: High levels of stress can impact the hypothalamus, the part of the brain that regulates hormones related to the menstrual cycle. This can lead to missed or irregular periods.

3. Weight Changes: Significant weight loss or gain can disrupt your menstrual cycle. Low body weight, often seen in eating disorders, can lead to amenorrhea (the absence of menstruation).

4. Medical Conditions: Conditions such as endometriosis, uterine fibroids, or pelvic inflammatory disease can also cause irregularities in your menstrual cycle.

5. Medications: Certain medications, including hormonal contraceptives, can affect your menstrual cycle. If you have recently started or stopped any medication, this could be a contributing factor.

6. Age: If you are in your late teens or approaching menopause, your body may naturally experience changes in your menstrual cycle.

Given that you have ruled out pregnancy, it is advisable to monitor your symptoms. If your period does not return within a few weeks, or if you experience other concerning symptoms such as severe pain, heavy bleeding, or unusual discharge, it would be wise to seek medical attention.
When you visit a healthcare provider, they may perform several evaluations, including:
- Physical Examination: A thorough physical exam to check for any signs of underlying conditions.

- Blood Tests: To check hormone levels, thyroid function, and other relevant markers.

- Ultrasound: To visualize the reproductive organs and check for any abnormalities such as cysts or fibroids.

In terms of treatment, it will depend on the underlying cause of your irregular periods. If a hormonal imbalance is identified, your doctor may recommend hormonal therapy or lifestyle changes. For stress-related issues, counseling or stress management techniques may be beneficial.

In conclusion, while it is possible that your menstrual cycle may normalize on its own, it is essential to pay attention to your body and seek medical advice if your period does not return or if you have any other concerning symptoms. Early intervention can help address any underlying issues and restore your menstrual health. Remember, your healthcare provider is your best resource for personalized advice and treatment options.

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