Disease Description (Causes and Symptoms)
- Definition: Ovulation pain (ovulation pain) refers to pelvic or lower abdominal pain occurring in the area of one ovary in women of reproductive age during ovulation (usually about 2 weeks before the start of the next menstrual period).
- Causes and pathophysiology: The main hypothesis is that the ovary swells as the follicle matures, or that a small amount of blood or fluid leaks into the abdominal cavity when the follicle ruptures, irritating the peritoneum. The exact mechanism has not been fully established.
- Main symptoms: Pain in one lower abdomen (left or right) or the pelvis (lasting from several minutes to several hours, and rarely 2–3 days); the severity varies from slight discomfort to severe pain comparable to appendicitis. Accompanying symptoms may include headache and nausea. The pain tends to occur regularly in association with the menstrual cycle.
Treatment Methods
- General management
- In most cases, it resolves naturally without special treatment.
- Rest, warm compresses (on the abdomen), and fluid intake may relieve symptoms.
- Pain relievers: Use nonsteroidal anti-inflammatory drugs (NSAIDs; e.g., ibuprofen, naproxen) when symptoms are present.
- Medication/Hormonal Therapy
- Prevention through ovulation suppression: Combined oral contraceptives (or other ovulation-suppressing hormone therapies) may stop ovulation and eliminate ovulation pain.
- Other hormone treatments are generally not necessary; consult an obstetrics and gynecology specialist in severe cases.
- Diagnostic/Therapeutic Procedures
- When the pain is unusually severe or there are suspicious findings (e.g., fever, persistent severe pain, or signs of peritoneal irritation), additional tests may be performed, such as blood tests, pelvic ultrasound, and, if necessary, CT.
- Precautions (Risk of Complications and Self-Care)
- Visit a medical institution immediately if abnormal symptoms such as fever, painful urination, abnormal vaginal bleeding, or repeated vomiting occur.
- If the pain persists when it is not the time of ovulation or continues for more than one day, specialist medical care is needed.
- Before taking contraceptive pills, check for contraindications such as a history of smoking and risk factors for blood clots.
Checklist Before an Outpatient Visit (Including Example Questions)
- Items to prepare (bringing these can facilitate the consultation)
- A list of currently used medications (prescription medicines, over-the-counter medicines, and supplements)
- Menstrual history: the first day of the last menstrual period, usual cycle, and regularity
- Pain record: date of onset, duration (number of minutes/hours), left or right side, intensity (pain scale), and accompanying symptoms (fever, nausea, bleeding, etc.)
- Previous test results (pelvic ultrasound, blood tests, etc.) or records of surgeries and medical history
- Basal body temperature chart or ovulation predictor test results (if used)
- Tests that may be performed during the outpatient visit
- Clinical examination (abdomen and pelvis), pregnancy test (to rule out pregnancy), pelvic ultrasound, and, if necessary, blood tests (CBC, inflammatory markers) or imaging tests (CT), etc.
- Example questions (for patients)
- When did the pain begin? What is its relationship to the menstrual cycle?
- Is the pain consistently on one side (left/right), and does it recur on the same side every month?
- Are there any actions or medications that help relieve the pain (warm compresses, pain relievers, etc.)?
General Examples of Questions to Ask the Doctor
- "How can we determine whether this pain is ovulation pain or whether it could be another condition, such as appendicitis or a ruptured ovarian cyst?"
- "What pain reliever and method of use (dose and frequency) are recommended?"
- "Can contraceptive pills relieve the symptoms? What are the side effects or contraindications?"
- "What signs indicate that I should go to the emergency room immediately when the pain is severe?"
Examples of Condition-Specific Questions
- "Based on the menstrual cycle and pain diary I recorded, can you confirm whether this pain coincides with ovulation?"
- "The pain recurs on the same side every month. Should we check for an ovarian abnormality (such as a cyst) on ultrasound?"
Additional Information
- Prognosis: In most cases, it resolves naturally, and significant long-term complications are rare.
- Differential diagnoses include appendicitis, rupture of a fallopian tube or ovarian cyst, trauma or infection (pelvic inflammatory disease), ectopic pregnancy, and urinary stones; additional evaluation is necessary if abnormal findings are present.









