What could cause severe lower back pain when bending over?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Severe lower back pain when bending over is often linked to underlying issues such as spinal misalignment, disc degeneration, muscle strain, or in some cases, referred pain from a duodenal ulcer. Identifying the exact cause matters, because treatment for a mechanical spine issue differs greatly from care for an internal condition.

Because these causes range from mild to serious, guessing can delay proper care. A free, instant, online symptom check can help you quickly narrow down likely causes based on your specific symptoms and guide your next steps—whether that's home care, seeing a doctor, or urgent evaluation. It takes only a few minutes and could save you days of uncertainty.

Reviewed for medical accuracy: 07/15/2026

Important Next Steps

Learn what’s causing severe back pain Discover if your back pain needs care See if bent-over pain needs urgent help Find OTC relief for severe back pain Find doctors for back pain evaluation Explore home remedies for back pain Understand if serious causes fit symptoms

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Explanation

Severe lower back pain during bending can have several causes.

Spine Vibration: The spine can experience vibrations that may lead to low back pain. These vibrations can affect the way the spine moves and may cause discomfort or pain, especially when bending over.
Disc Degeneration: Another potential cause is disc degeneration. This happens when the discs in the spine wear down over time, which can lead to pain and stiffness, particularly noticeable when bending.
Duodenal Ulcer: Interestingly, a duodenal ulcer, which is a sore in the stomach lining, can also cause referred pain in the lower back. This means the pain felt in the back is actually coming from the ulcer.

Each of these conditions affects the body differently, but all can result in significant discomfort in the lower back. If you're experiencing persistent or severe back pain, you can get personalized insights by taking a free symptom checker assessment to help identify potential causes and determine your next steps for care.

(References)

Pope MH, & Hansson TH. (1992). Vibration of the spine and low back pain. Clinical orthopaedics and related research, 1534724.
Kauppila LI, McAlindon T, Evans S, Wilson PW, Kiel D, & Felson DT. (1997). Disc degeneration/back pain and calcification of the .... Spine, 9253101.
Weiss DJ, Conliffe T, & Tata N. (1998). Low back pain caused by a duodenal ulcer. Archives of physical medicine and rehabilitation, 9749698.

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