Your back can feel sore for several common reasons

Tired muscles often cause a broad, dull ache

Back muscles work when you stand, turn, and lift. They can tire after extra work or an awkward move. The ache often feels broad instead of sharp. It'll often ease after you warm up. A tender spot may also hurt when you press it.

Your body may tighten nearby muscles to protect the sore area.

Gentle walking may help those tight muscles relax. Heat can also feel good when they seem stiff. Don't repeat a movement that sharply raises the soreness. Tell your doctor which movement caused that sharp increase.

Worn back joints can feel stiff after you rest

Small joints guide movement between the bones in your back. They may hurt when you twist or lean backward. Joints where your low back meets your hips can ache after standing. That soreness may feel deep and hard to locate. Joint wear often feels stiff after you sit.

An X-ray can show wear, but it can't feel your soreness.

The exam still matters. Your doctor may check which movements bring the ache back. The doctor may press near the joints and watch you walk. Those exam findings show whether the sore joints match your symptoms.

Sore discs and nerves can hurt down one leg

A disc is the soft pad between two back bones. It can wear down or become sore over time. A nearby nerve may then become irritated. You might feel burning, tingling, numbness, or pain down one leg. Coughing or sitting can make those leg symptoms worse.

Think of a disc as a small cushion between two bones.

New leg weakness needs prompt medical help. So does numbness around your groin. Get help quickly for new bladder or bowel trouble. Don't wait for reviews when those warning signs appear. Call a doctor after a bad fall or car crash, or with fever.

Your daily symptoms help the doctor plan the exam

Before a visit, note when the ache starts. Write down whether sitting, walking, or bending changes it. Tell the doctor where the soreness travels. Add any numbness or weakness. Your notes only need to help you remember.

Ask which symptom supports the doctor's idea about the cause.

The exam may not point to one exact sore part. That doesn't make the visit useless. You can still learn which movements seem safe. Ask when the doctor wants to see you again. Also ask which warning signs mean you need help sooner.

Evidence sources

1. The Lancet low back pain series states that for nearly all people with low back pain it is NOT possible to identify a specific nociceptive cause; only a small proportion have a well-understood pathological cause such as vertebral fracture, malignancy or infection. Most new episodes recover quickly, recurrence is common, and in a small proportion the pain becomes persistent and disabling - with initial high pain intensity, psychological distress and pain at multiple body sites raising that risk.

   Hartvigsen J, Hancock MJ, Kongsted A, et al. — What low back pain is and why we need to pay attention.. The Lancet, 2018.

2. A systematic review of 33 studies imaging 3,110 people WITHOUT back pain found disc degeneration in 37% of 20-year-olds rising to 96% of 80-year-olds, disc bulges in 30% rising to 84%, disc protrusions in 29% rising to 43%, and annular fissures in 19% rising to 29%. The authors conclude that many degenerative imaging features are part of normal ageing and unassociated with pain.

   Brinjikji W, Luetmer PH, Comstock B, et al. — Systematic literature review of imaging features of spinal degeneration in asymptomatic populations.. American Journal of Neuroradiology, 2015.

3. The Global Burden of Disease Study 2021 estimated that low back pain affected 619 million people worldwide in 2020 and projects 843 million prevalent cases by 2050. It remains the leading cause of years lived with disability globally, and 38.8% of that disability burden is attributed to modifiable factors - occupational exposures, smoking and high BMI.

   GBD 2021 Low Back Pain Collaborators — Global, regional, and national burden of low back pain, 1990-2020, its attributable risk factors, and projections to 2050: a systematic analysis of the Global Burden of Disease Study 2021.. The Lancet Rheumatology, 2023.

4. Intraosseous basivertebral nerve ablation - which targets the nerve inside the vertebral body in patients with vertebrogenic pain and Modic endplate changes on MRI - produced a 25.95-point ODI improvement and a 4.38-point VAS improvement at a mean of 6.4 years in the treatment arm of a sham-controlled randomised trial, with 66% reporting more than 50% pain reduction. This is one of the few genuinely durable positive procedural results in chronic low back pain, and it applies only to the narrow subgroup with the MRI biomarker.

   Fischgrund JS, Rhyne A, Macadaeg K, et al. — Long-term outcomes following intraosseous basivertebral nerve ablation for the treatment of chronic low back pain: 5-year treatment arm results from a prospective randomized double-blind sham-controlled multi-center study.. European Spine Journal, 2020.