What causes severe fatigue?

Severe fatigue is rarely “just being tired.” In the setting of chronic pelvic pain conditions like endometriosis or adenomyosis, ongoing inflammation can affect energy levels, and pain can keep your nervous system in a constant state of high alert that burns through your reserves.

Fatigue also builds when sleep is repeatedly interrupted—by pain, bladder urgency, GI symptoms, or nighttime waking—and when stress hormones stay elevated for long stretches. Over time, the body diverts energy toward coping and recovery rather than daily functioning, which can feel like deep, unrefreshing exhaustion. If fatigue is severe, persistent, or out of proportion to your activity level, our team can help evaluate the likely drivers in your case and discuss next steps to improve your quality of life.