Recognizing the symptoms of endometriosis beyond painful periods

Pain beyond periods: the most documented symptoms

Dysmenorrhea (pain during periods) is the most frequently reported symptom. It can be intense from the very first period, resistant to common painkillers, and cause a partial or complete inability to carry out daily activities. These pains vary in intensity, duration, and location for each woman.

Deep dyspareunia (pain during sexual intercourse) is another documented sign, linked to lesions located on the uterosacral ligaments or in the cul-de-sac of Douglas. Persistent pelvic pain outside of periods, which accompanies the cycle without being strictly linked to it, may also be present.

Subfertility (difficulty conceiving) is sometimes the first sign that leads to a diagnosis, revealed during a fertility assessment. Endometriosis does not systematically cause infertility, but it can affect egg quality, fallopian tube patency, or uterine receptivity depending on the form and location of the lesions.

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Atypical symptoms: signs that lead to misdiagnosis

These manifestations are harder to spontaneously link to endometriosis. They may lead patients to a gastroenterologist, urologist, or rheumatologist for several months, or even years, before a gynecological connection is considered.

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Digestive symptoms

• Dyschezia: pain during bowel movements, often following the menstrual cycle ‍
• Significant bloating, sometimes described as "endobelly" (visible abdominal swelling, especially at the end of the cycle or during periods) ‍
• Bowel habit changes: constipation, diarrhea, or alternating between the two, particularly during periods ‍
• Nausea or abdominal pain in the week leading up to your period

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Urinary symptoms

• Dysuria: burning or pain during urination, following the menstrual cycle ‍
• Pollakiuria: frequent and urgent need to urinate ‍
• Hematuria: blood in the urine during periods, a sign of possible bladder involvement

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Other symptoms

• Chronic fatigue, sometimes intense, with no identifiable cause ‍
• Lower back pain or sciatica during periods ‍
• Right shoulder pain during periods: in rare cases, a sign of diaphragmatic endometriosis

A second opinion from an endometriosis specialist can help clarify an atypical clinical picture by reviewing imaging results in the context of all symptoms.

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Common misdiagnoses that delay the diagnostic process

Several conditions share symptoms similar to those of endometriosis, which complicates the diagnostic process and contributes to delays.

• Pelvic congestion: dilated pelvic veins can cause chronic pelvic pain, a feeling of heaviness, and dysmenorrhea—symptoms easily confused with endometriosis. Diagnosis is based on a Doppler ultrasound or a pelvic MRI with vascular sequences. ‍
• Pelvic neuropathic pain: damage to the pelvic nerves (such as the pudendal or sciatic nerve) can cause cyclic or chronic pain that mimics deep endometriosis. The absence of lesions on imaging and the neuropathic nature of the pain (burning sensations, electric shocks) point toward this diagnosis. ‍
• Irritable bowel syndrome: bloating, bowel irregularities, and abdominal pain are common to both conditions. The main difference lies in the timing: in endometriosis, these symptoms are often linked to the menstrual cycle. ‍
• Uterine fibroids: like endometriosis, they can cause heavy periods and pelvic pain. Imaging tests help distinguish between the two. ‍
• Interstitial cystitis: the urinary symptoms of bladder endometriosis (pain, frequent urges, hematuria) resemble those of chronic cystitis. ‍
• Crohn's disease: in cases of deep digestive involvement, the gastrointestinal pain caused by endometriosis can be mistaken for inflammatory bowel disease.

Only specialized imaging (endovaginal ultrasound and pelvic MRI), performed by an experienced practitioner, can help steer the diagnosis toward endometriosis rather than one of these other conditions.

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Signs that may point to endometriosis

Certain aspects of your medical history or life experience may increase the suspicion of endometriosis and warrant an earlier specialized assessment.

• Family history: the risk is higher if a mother or sister is affected, suggesting a genetic component in the predisposition to the disease. ‍
• Early periods (before age 12), short cycles, or very heavy periods: these characteristics increase the frequency of menstruation and the likelihood of retrograde menstruation. ‍
• Painful periods starting in adolescence: a warning sign that deserves specialized medical attention, though it is often dismissed for many years. ‍
• Environmental factors: exposure to certain endocrine disruptors (organochlorine compounds, dioxins, PCBs) is suspected to play a role in the predisposition to the disease, according to Inserm data. This link is still being studied.

These factors are indicators, not a confirmed diagnosis. Only a specialized medical assessment can confirm or rule out endometriosis.