Why does endometriosis cause tailbone pain?

Tailbone (coccyx) pain can happen with endometriosis even though the coccyx isn’t a reproductive organ. One common reason is pelvic floor dysfunction: ongoing pelvic inflammation and pain can “train” the pelvic floor muscles to stay clenched and overactive, and those muscles attach near the tailbone and can refer pain into the coccyx, low back, hips, and rectum. Over time, nerve sensitization can also develop, meaning the nervous system becomes better at producing pain signals—so tailbone discomfort can persist or flare even when the original trigger seems small.

In other cases, tailbone pain is part of a broader endometriosis pain pattern that overlaps with bowel symptoms, deep pelvic pressure, or pain with sitting, and it may reflect how your muscles, fascia, and nerves are interacting—not just where endometriosis lesions are visible. That’s why effective care often looks beyond the lesions alone and includes a careful evaluation of pelvic floor tone, myofascial trigger points, posture/movement patterns, and coexisting conditions like adenomyosis.

If tailbone pain is one of your dominant symptoms, our team can help you map out likely pain drivers and build a plan that may include expert excision surgery when indicated and pelvic floor therapy to address muscle guarding and sensitization. If you’d like, reach out to schedule a consultation so we can review your symptoms in detail and discuss the next best steps.