Causes
In many cases no single structure can be blamed, but several conditions commonly contribute:- Muscle or ligament strain: Repeated heavy lifting, awkward movements, and deconditioned core muscles leave the back vulnerable to ongoing strain.
- Degenerative disc disease: The cushioning discs between vertebrae naturally dry out and flatten with age, which can cause aching stiffness.
- Arthritis of the spine: Osteoarthritis of the small facet joints of the spine is a frequent source of chronic ache in older adults.
- Nerve-root compression: A herniated disc or bony overgrowth can pinch a spinal nerve, producing lumbosacral radiculopathy — pain, numbness, or weakness radiating down the leg.
- Compression fractures: In people with osteoporosis, weakened vertebrae can fracture with little or no trauma.
- Centralized pain conditions: Disorders such as fibromyalgia can amplify back pain even when imaging looks unremarkable.
Symptoms and Warning Signs
Chronic low back pain may be a dull ache, stiffness, or sharp pain that flares with activity. For most people, symptoms wax and wane over time, with flares triggered by unusual exertion or prolonged sitting. Certain "red flag" symptoms warrant prompt medical attention:- Numbness in the groin or inner thighs, or loss of bladder or bowel control: These can signal serious nerve compression and are an emergency.
- Progressive leg weakness: Worsening strength in the legs suggests significant nerve involvement.
- Fever, unexplained weight loss, or a history of cancer: These raise concern for infection or tumor.
- Pain after significant trauma: A fall or accident can cause a fracture that needs imaging.
Diagnosis
Your physician will review your history and perform a physical and neurologic examination. Imaging is not needed for most chronic back pain because incidental findings are extremely common; X-rays or MRI are reserved for red-flag symptoms, suspected nerve compression, or pain that fails to improve with appropriate treatment. Your physician will also ask about sleep, mood, and activity levels, because these strongly influence chronic pain and how quickly it improves.Treatment
The most effective plans combine several approaches rather than relying on any single one:- Exercise and physical therapy: Core strengthening, stretching, and graded aerobic activity such as walking or swimming are the cornerstone of treatment. Staying active outperforms bed rest.
- Medications: NSAIDs such as naproxen ease pain and inflammation. Muscle relaxants such as cyclobenzaprine or methocarbamol may help short-term during flares, and duloxetine is an option for persistent chronic pain.
- Weight management and smoking cessation: Both reduce strain on the spine and improve healing.
- Heat, massage, and manual therapies: These provide meaningful short-term relief for many people.
- Injections and surgery: Epidural steroid injections or surgery are considered only for specific problems, such as confirmed nerve compression that has not responded to conservative care.
Getting Function Back With Chronic Low Back Pain
The plans that work aim at what you can do rather than at making the ache disappear, and they set honest expectations, because every single treatment for chronic back pain has a modest effect and results come from stacking several.
What each medication realistically does
An NSAID such as naproxen or meloxicam gives a small average reduction in pain and is used in short courses, with caution in kidney disease, ulcer disease, or heart failure. Acetaminophen is safer but performs poorly for back pain. Muscle relaxants such as cyclobenzaprine and methocarbamol help a flare for a few days and then mostly sedate, and they raise fall risk in older adults. Duloxetine is the one daily medication with evidence in chronic low back pain, and it takes several weeks to judge. Gabapentin does not help ordinary back pain without nerve involvement, and opioids are not recommended long term; our chronic pain without opioids article covers the alternatives.
Why the MRI often makes things worse
Bulging discs, degenerative changes, and arthritis appear on the scans of most pain-free adults past middle age, so imaging without a red flag usually finds something irrelevant and leads to procedures that do not improve outcomes. Imaging earns its place when there is nerve weakness, a fever, a cancer history, significant trauma, or pain that has not budged despite real treatment. Our primary care approach to low back pain explains a good workup.
Movement is the treatment, not the reward
Structured exercise beats rest, and the type matters less than consistency: walking, water exercise, physical therapy, yoga, and tai chi all have supporting evidence. Progress in small planned increments rather than by how the day feels, and expect soreness, which is not damage. Our walking challenge is a start, strength training after 60 covers the core work, and prolonged sitting explains why the desk setup matters.
Sleep, mood, and the pain cycle
Poor sleep lowers pain tolerance by the next afternoon, so treating insomnia is back pain treatment; our CBT-I article covers the first-line approach. Depression, chronic stress, and fear of movement amplify the signal, and fibromyalgia should be considered when pain is widespread and sleep is unrefreshing. Weight loss in obesity and stopping smoking both reduce pain over time.
What gets mistaken for ordinary back pain
Leg pain and numbness that follow a nerve path point to radiculopathy or sciatica; our sciatica versus piriformis syndrome article separates the two. Pain on walking that eases when you lean on a cart suggests spinal stenosis. Sudden severe pain after a minor strain in someone with osteoporosis is a compression fracture. Morning stiffness lasting over an hour in a younger adult suggests inflammatory arthritis, and colicky flank pain is likelier kidney stones. Numbness in the groin or loss of bladder or bowel control is a surgical emergency. Our musculoskeletal team builds the plan and coordinates therapy. NIAMS and NINDS publish patient guidance on back pain.
If back pain has outlasted three months and the plan is still rest and pills, schedule a visit.