Why Does Your Lower Back Hurt?

You bend down to pick up something off the floor — nothing dramatic, maybe a sock or a dropped set of keys — and there it is. A sharp catch low in your back, followed by that unmistakable feeling of your whole body suddenly negotiating with you before it agrees to straighten back up.

For something that can feel so alarming in the moment, lower back pain is remarkably common. Around 80% of people will experience it at some point in their life. And yet most people still treat it as a mystery — something that "just happens," flares up out of nowhere, and has to be waited out. In reality, lower back pain almost always has an identifiable, treatable cause. Knowing what's actually going on underneath is what separates a one-off flare-up from months of guessing.

The Usual Suspects: What's Actually Causing Your Lower Back Pain

Muscle and ligament strain. The most common cause by far. A sudden movement, an awkward lift, or simply spending a weekend doing more physical activity than your body is used to can overload the muscles and ligaments supporting your spine.

Prolonged sitting. Sitting places significantly more load through the discs of your lower back than standing does. Add hours of it a day, often in a slouched position, and the tissues supporting your spine gradually lose both strength and tolerance.

A weak or under-used “core”. Your deep core and glute muscles are meant to share the load of everyday movement with your spine. When they're not doing their share — often from long periods of inactivity — your lower back ends up compensating, and compensation over time becomes pain.

Disc-related irritation. The discs between your vertebrae can become irritated or bulge slightly, sometimes irritating a nearby nerve. This is often what's behind pain that travels — a dull ache low in the back that radiates into the buttock or down the leg.

Sacroiliac (SI) joint dysfunction. The joints connecting your spine to your pelvis can become restricted or irritated, often causing pain on one side low in the back that's mistaken for a muscular issue.

Old injuries and poor movement patterns. A previous strain that never fully rehabilitated often leaves behind compensations elsewhere in the body, which can quietly build toward the next flare-up.

When Lower Back Pain Is a Sign of Something More Serious

The overwhelming majority of lower back pain is mechanical and manageable. But certain signs warrant prompt medical attention rather than a wait-and-see approach. Seek urgent care if lower back pain comes with:

• Numbness in the groin or inner thighs ("saddle" area), or new difficulty controlling your bladder or bowel

• Progressive weakness or numbness in one or both legs

• Pain following significant trauma, such as a fall or car accident

• Unexplained weight loss, fever, or a history of cancer alongside new back pain

• Pain that's constant, worsens at night, and isn't relieved by rest or position changes

Outside of these red flags, everyday lower back pain — even when it's intense in the moment — is typically very responsive to the right care.

How Chiropractic Care Approaches Lower Back Pain

The first visit is about building an accurate picture: how the pain started, what movements aggravate or ease it, your activity levels, sleep, and any past injuries. From there, we assess the mobility of your spine and pelvis, muscle strength and length, and how you move through everyday patterns like bending, twisting, and lifting — along with orthopedic and neurological testing to rule out anything requiring a different approach.

Care is then built around what we find, which commonly includes:

• Spinal and pelvic adjustments to restore movement to joints that have become restricted or are compensating for others

• Soft tissue therapy to release chronically tight muscles that are working overtime to stabilise the area

• Core and movement rehabilitation to rebuild the strength that takes pressure off the spine long-term

• Movement coaching for the specific activities that keep aggravating things — lifting technique, desk setup, or exercise form

The aim isn't just to settle this episode. It's to address why your back reached a tipping point, so the next heavy box or long car trip doesn't send you right back to square one.

Common Lower Back Pain Myths, Busted

"I need to rest until it fully goes away." Extended bed rest has actually been shown to slow recovery in most cases of mechanical back pain. Gentle, guided movement — even just short walks — tends to help far more than staying still.

"An MRI will tell us exactly what's wrong." Imaging is useful in specific circumstances, but studies show disc bulges and other "abnormal" findings appear commonly in people with no back pain at all. A thorough physical assessment is often more useful for guiding everyday back pain care than a scan alone.

"Once you throw your back out, it'll always be weak." A single episode of back pain doesn't doom you to a lifetime of a "bad back." With the right rehabilitation, most people return to full function and can build a back that's genuinely more resilient than before.