What Causes Back Pain? Common Triggers You Shouldn’t Ignore

Q: Can back pain come on without any injury or obvious cause?

Absolutely — and it is more common than most people expect. Degeneration, muscle atrophy, and postural habits develop gradually, well beneath the threshold of pain. When the cumulative damage finally exceeds what the body can compensate for, pain appears — seemingly out of nowhere, but actually as the final result of a long process.

Author: MAPS Centers For Pain Control

Published: March 11, 2026

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Back Pain Treatment | Pain Management

What Causes Back Pain? Common Triggers You Shouldn't Ignore

Table of Contents hide

1 1. Degenerative Disc Disease and Spinal Arthritis

2 2. Radiculopathy — A Pinched Nerve in the Spine

3 3. Mechanical Back Pain — The Posture and Movement Problem

4 4. Traumatic Injury

5 5. Core Muscle Weakness and Deep Spinal Muscle Atrophy

6 6. A Younger Athlete’s Back Pain — Muscular Strain and Overuse

7 The Silent Reality: Back Pain That Builds Before You Feel It

8 When to Stop Waiting and See a Specialist

9 FAQs: What Causes Back Pain?

10 Getting the Right Diagnosis Is Everything

Summary

Back pain rarely has a single, simple cause. The most common triggers include disc degeneration, pinched nerves (radiculopathy), poor posture, traumatic injuries, and deep muscle weakness. What makes back pain especially tricky is that the underlying damage often develops silently for years before pain appears — meaning your “sudden” back pain probably isn’t sudden at all. Understanding your specific trigger is the first step toward effective, lasting treatment. A MAPS pain specialist can help you identify the cause and build a recovery plan that addresses it at the root.

You bent over to pick something up, and your back gave out. Or maybe you woke up one morning and couldn’t straighten up. Or the ache has just been building slowly for months, and you’re not sure when it actually started. However back pain arrives, the first question most people ask is the same: What caused this?

It’s the right question — and the answer matters more than most people realize. Back pain is not a diagnosis in itself; it’s a symptom. And the specific cause behind it determines which treatments will actually work and which won’t. At MAPS Centers for Pain Control, diagnosing the source of a patient’s back pain before recommending any treatment is the cornerstone of care.

“Knowing the right questions to ask and drawing the correct history from the patient is so important in determining your diagnosis and what treatment is going to be the most effective for that patient,” says Adarsh Shukla, MD, LCP-C, a pain management specialist with MAPS.

Here are the most common causes of back pain — and why none of them should be ignored.

1. Degenerative Disc Disease and Spinal Arthritis

The spine is a remarkable structure, but it isn’t immune to the effects of time. Between each vertebra sits a cushioning disc that absorbs shock and allows the spine to bend and rotate. Over years and decades, those discs gradually lose hydration and height — a process called degeneration. The small joints between vertebrae (facet joints) can also develop arthritis, becoming inflamed, stiff, and painful.

This kind of wear-and-tear damage is the most common root cause of low back pain, and it’s also the sneakiest — because it develops slowly and silently long before any pain is felt.

Dr. Shukla addresses this directly with his patients: “I know this pain may have just presented in the past week, maybe month, maybe a couple months, but likely the processes inside your body that were happening that led to this were happening long before that. It could be years of either improper mechanics or years of degeneration that was happening in your body, and it just didn’t present as a symptom until very recently.”

This is why many people experience a seemingly minor incident — a sneeze, a twist, reaching for something on a shelf — and suddenly can’t move. The incident didn’t cause the back problem. It just exposed the vulnerability that had been building for years.

2. Radiculopathy — A Pinched Nerve in the Spine

Radiculopathy is a term patients don’t always know, but it describes something many of them have experienced: pain that originates in the spine but travels — sometimes all the way down the leg to the foot. It happens when a spinal nerve root becomes compressed, often by a herniated disc that has bulged out of position or a bone spur that has grown into the nerve’s pathway.

“A radiculopathy is basically a term for a pinched nerve in your back that can cause some pain in your low back as well as pain in your legs — in addition to any nerve-type symptoms like numbness, tingling, burning in the legs or the feet,” explains Dr. Shukla.

The character of radicular pain is distinctive: it tends to follow a specific path along the nerve rather than staying localized, and it often comes with sensory symptoms like pins-and-needles or a burning quality. When the sciatic nerve is involved — the large nerve that runs from the lower back through the buttock and down each leg — the condition is commonly called sciatica.
Radiculopathy is not something that tends to improve meaningfully on its own without treatment, particularly if the disc herniation causing it is significant.

3. Mechanical Back Pain — The Posture and Movement Problem

Not all back pain comes from discs or nerves. Mechanical back pain refers to pain that results from how the body moves — or more precisely, from movement patterns that load the spine in ways it isn’t designed to handle repeatedly over time.

Poor posture, improper lifting mechanics, sitting for extended periods in unsupported positions, and muscle imbalances all fall into this category. And Chicago’s workforce — whether sitting through long commutes on the CTA, pulling double shifts at hospitals, or logging hours at a standing desk in a River North high-rise — is particularly exposed to these mechanical stressors.

Dr. Shukla points to a specific professional group he sees repeatedly: “One example I see a lot is nurses. Nurses who work in hospitals are very often leaned over the patient’s bed — that’s a forward-bent posture at the waist. If you’re doing that multiple times throughout the day, every day, that’s not a favorable position for your back.”

The same principle applies to anyone with prolonged desk work, repetitive bending and lifting, or jobs that require sustained awkward positions. The back can compensate for poor mechanics for a long time before the load exceeds what the structures can handle — and then pain sets in.

4. Traumatic Injury

Sudden, acute injuries are another major cause of back pain. Falls on icy sidewalks (a Chicago winter reality), car accidents, sports collisions, and workplace incidents can all damage the muscles, ligaments, discs, and vertebrae of the spine in ways that produce immediate — and sometimes serious — pain.

Dr. Shukla notes that traumatic back pain is a frequent presentation at MAPS: “That could be somebody who’s had a fall or a car accident or another type of accident resulting in an injury to the low back.”

What’s important to understand about traumatic back injuries is that the severity of the impact doesn’t always predict the severity of the injury. A seemingly minor fender-bender can strain the lumbar spine significantly. And injuries that go unaddressed — even ones that feel manageable at first — have a strong tendency to transition into chronic pain over time.

5. Core Muscle Weakness and Deep Spinal Muscle Atrophy

The spine doesn’t support itself. It depends on a surrounding network of muscles to maintain alignment, absorb load, and allow movement without injury. When those muscles are weak — particularly the deep stabilizing muscles that run close to the spine — the vertebrae and discs are left bearing more mechanical stress than they should.

The most clinically significant of these deep muscles is the multifidus, which runs along the length of the spine and plays a central role in maintaining posture. What makes the multifidus uniquely important — and uniquely difficult to rehabilitate — is that it operates under autonomous control. It doesn’t activate when you consciously decide to “engage your core.” It fires automatically, the moment you stand up or begin walking, without any conscious input.

In patients with chronic low back pain, MRI scans frequently show that this muscle has atrophied and been replaced by fatty tissue — leaving the spine less supported with every movement. And because it isn’t under voluntary control, standard core exercises don’t fully reach it.

“What we see on MRIs of patients who have chronic low back pain is that that muscle becomes infiltrated with fat — it actually loses the muscle tissue, it atrophies, and then it gets replaced with fat,” explains Dr. Shukla. “And so that makes the muscle less effective in maintaining proper posture and proper mechanics.”

6. A Younger Athlete’s Back Pain — Muscular Strain and Overuse

Back pain isn’t limited to older adults or sedentary professionals. Younger, active patients — athletes, weekend warriors, fitness enthusiasts — also develop back pain, typically from muscular strain, overuse, or sudden loading beyond what the body has been conditioned for.

Dr. Shukla describes this as another common presentation: “A younger athlete who has a muscular strain or something like that — or just somebody who has some mechanical low back pain from overuse or overload or just wear and tear of the back.”

While muscular back pain in younger patients often resolves more readily than degenerative causes, it still warrants evaluation. Recurrent strain in the same area can signal an underlying structural issue or movement pattern that needs to be corrected before it becomes a chronic problem.

The Silent Reality: Back Pain That Builds Before You Feel It

One of the most important insights Dr. Shukla shares with every new patient is that the timing of back pain’s appearance is almost always deceptive. The pain may feel sudden. It may have started last month. But the physical conditions that made it possible almost certainly developed over a much longer period.

“Something that developed over years and years of wear and tear or improper mechanics can’t just be fixed in a short amount of time,” he says. “When I’m establishing a doctor-patient relationship, I’ll counsel my patients on that. This might be a longer process than you initially thought — but there is a clear path to recovery.”

This is also why back pain that seems to go away on its own shouldn’t be dismissed. “Oftentimes, especially in younger people, back pain will just resolve on its own in a matter of weeks or days,” Dr. Shukla notes. “But most of the time, there’s some underlying factors that may have caused that pain — whether that’s degeneration of the discs, or arthritis in the back, or a pinched nerve — that will likely result in recurrence of that pain.”

When to Stop Waiting and See a Specialist

The most common mistake people make with back pain is waiting too long to seek evaluation. “We know that with back pain, the longer you wait to address it, the more likely it is that that pain becomes chronic and long lasting,” says Dr. Shukla.

Seek care promptly if you experience any of the following:

Back pain that has lasted more than two to three weeks without improvement
Pain that radiates into the buttocks, hips, or down either leg
Numbness, tingling, burning, or weakness in the legs or feet
Back pain following a fall, accident, or sudden injury
Pain that is worsening over time rather than improving
Back pain that is affecting your sleep, work, or daily activities

Even if you’re not sure whether your pain is “serious enough” to warrant a visit, getting evaluated is always the right call. The earlier a cause is identified, the more treatment options are available — and the better the odds of a full recovery.

FAQs: What Causes Back Pain?

Q: Can stress cause back pain? A: Yes. Psychological stress causes muscle tension throughout the body, including in the back. Chronic stress can worsen mechanical back pain and make existing pain feel more intense. While stress alone is rarely the sole cause, it’s frequently a contributing factor worth addressing alongside physical treatment.

Q: Is back pain always caused by something structural, like a disc or nerve? A: No. Many cases of back pain are muscular or mechanical in origin — the result of poor posture, overuse, or muscle imbalances — without any identifiable structural damage on imaging. This is one reason a physical examination by a trained specialist is so valuable: imaging alone doesn’t tell the whole story.

Q: Can back pain come on without any injury or obvious cause? A: Absolutely — and it’s more common than most people expect. Degeneration, muscle atrophy, and postural habits develop gradually, well beneath the threshold of pain. When the cumulative damage finally exceeds what the body can compensate for, pain appears — seemingly out of nowhere, but actually as the final result of a long process.

Q: How do I know what’s causing my specific back pain? A: A combination of detailed history-taking, physical examination, and appropriate imaging (X-ray, MRI) is needed to accurately identify a pain source. No online symptom checker or self-diagnosis can substitute for that evaluation. At MAPS, every new patient goes through a thorough intake process before any treatment is recommended.

Getting the Right Diagnosis Is Everything

Back pain is one of the most common medical conditions in the country — but it is not one condition. It’s a symptom with many possible causes, each requiring a different approach. Treating the wrong cause, or treating symptoms without addressing the cause at all, is why so many people cycle through temporary relief without ever achieving lasting recovery.

The MAPS team — led by double-board-certified pain management physicians with locations across Chicagoland — specializes in getting to the root of back pain and building individualized treatment plans that address it there.

“Low back pain is a complex medical problem,” Dr. Shukla says. “There’s not one source of it, there’s not one reason it’s happening, and there’s not one effective treatment.”

That complexity is exactly why expert evaluation matters. And it’s why the path to real relief starts with understanding what’s actually causing your pain.

Ready to find out what’s behind your back pain? Call MAPS at 773-917-8400 or schedule a consultation online at mwpain.com. Eight Chicagoland locations, including Chicago North Side, Midway, Des Plaines, Frankfort, Franklin Park, Hazel Crest, Woodridge, and St. John.

Reviewed by Adarsh Shukla, MD, LCP-C — Board-Certified Pain Management Specialist, MAPS Centers for Pain Control. This content is for educational purposes and does not constitute medical advice. Please consult a qualified healthcare provider for diagnosis and treatment of back pain.