Symptoms
Why do I get low back and leg pain during my period?
The short answer
Low back and leg pain during your period can happen when pelvic inflammation irritates pain pathways that send pain into your back and legs. In some patients, endometriosis can play a role, but pain can also come from the spine, hips, or muscles.
Low back and leg pain that predictably flares with your period can happen when pelvic inflammation irritates pain pathways that refer pain to the back, hips, buttocks, and down the leg. In some patients, endometriosis can play a role: either indirectly (pelvic inflammation and scarring increasing pressure and sensitivity around nearby nerves) or more directly if the disease affects areas close to major nerves.
When period-related leg pain resembles sciatica, with deep buttock pain, tingling, burning, or pain radiating down the back of the thigh, it raises the possibility of endometriosis-related sciatic irritation or pelvic floor involvement (often described as piriformis-type pressure on the nerve). These symptoms may start before bleeding, peak during the period, and linger afterward. In more significant cases, they can be associated with weakness or changes in walking.
Because back and leg pain can also come from the spine, hips, or muscles, the key is the pattern and the full set of symptoms, including pelvic pain, bowel/bladder symptoms, or pain with sex. Our team can help you sort out whether your pain fits an endometriosis/adenomyosis pattern and, if needed, plan the next steps in evaluation, such as targeted imaging and a strategy focused on lasting relief rather than temporary suppression.
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Struggling with Period Pain?
Pelvic inflammation can cause low back and leg pain during your period. Our specialists can help diagnose if endometriosis is the cause and provide relief options.
Questions people ask next
All symptoms questionsIs my leg pain from endometriosis or a back/disc problem?
There is no perfect at-home test, but endometriosis-related leg pain often tracks with your cycle, while back or disc pain is more likely to change with spine movements. These conditions can overlap, and a pelvic and musculoskeletal evaluation can help sort them out.
Can endometriosis cause sciatica or leg pain?
Yes, endometriosis can cause sciatica-like symptoms and leg pain in some patients by growing in or near the sciatic nerve or causing inflammation and scarring that create nerve pressure. Pain may worsen before or during a period, but it doesn’t have to be cyclical.
Can endometriosis cause lower back pain?
Yes, endometriosis can cause lower back pain. Inflammation and scarring from endometriosis can irritate tissues and nerves in the back of the pelvis, or cause referred pain, where the source is pelvic but the pain is felt in your lower back.
Hip pain during periods: could it be endometriosis?
Yes, hip pain that predictably flares during your period can be endometriosis-related, as pelvic tissue or nerve irritation can send pain into the hip. But period-timed hip pain does not automatically mean endometriosis, and muscle, joint or spine problems can also contribute.
Further reading
Sciatic Nerve Endometriosis: Diagnosis and Treatment
Sciatic nerve endometriosis explained: key symptoms, how it's diagnosed (exam, MRI), and effective treatments including medication, PT, and surgical excision.
What Else Could It Be? Ruling Out Other Causes
Explore essential insights on endometriosis and other causes of pelvic pain. Learn about differential diagnoses and effective treatment options.
Different Types of Endometriosis Pain Explained
Explore types of endometriosis pain, evaluation, and evidence-based treatments, including triggers, pelvic floor therapy, CNS sensitization, and adenomyosis.
