Diagnosis is made by eliminating specific lower back pain causes of neurologic compromise, neoplasia, inflammatory arthritis, fracture, or referred pain from other locations or organ systems.
Pain, stiffness, and/or soreness of the lumbosacral region are the symptoms. May be acute (lasting <4 weeks), subacute (4 to 12 weeks), or chronic (>12 weeks).
Patient education, return to normal activity, and self-care temperature treatments (ice, heat) are the first steps in therapy.
Nonpharmacologic approaches to control pain are preferred. When these are ineffective, first-line pharmacotherapy is oral nonsteroidal anti-inflammatory drugs. Acetaminophen, muscle relaxants, opioids, and duloxetine may be used as adjuncts.
Musculoskeletal lower back pain is pain, stiffness, and/or soreness of the lumbosacral region (underneath the twelfth rib and above the gluteal folds).
Lower back pain is subdivided by time frame into acute lower back pain lasting <4 weeks, subacute lower back pain lasting 4 to 12 weeks, and chronic lower back pain lasting >12 weeks.
An exclusion diagnosis is made by eliminating specific causes of lower back pain arising from neurologic compromise, neoplasia, inflammatory arthritis, fracture, and referred pain from other locations or organ systems. The exact cause of pain is often impossible to identify precisely, but arises from any combination of pathology involving disks, vertebrae, facet joints, ligaments, and/or muscles.
History and exam
Key diagnostic factors
- obesity, stress, and psychiatric comorbidities
- history of prior lower back pain
- history of prior treatment
- pain radiation does not extend beyond the knee
- absence of red-flag symptoms
- absence of fever, fluctuance, exquisite tenderness to palpation
- sensory, motor, and deep-tendon reflex exams within normal limits
- negative straight- or crossed straight-leg raise test
Other diagnostic factors
- dull, gnawing, tearing, burning, or electric pain associated with muscle spasms
- lack of pain on flexion or relief on extension
- scoliosis or kyphosis
- negative FABER, Gaenslen, or Schober testing
- family history of degenerative disk disease
- poor musculotendinous flexibility and abnormal posture
- stress and psychiatric comorbidities
- increasing age, up to 60-70 years
- female sex
- heavy physical and occupational activities
- tobacco use
- prolonged standing
- vitamin D levels
1st investigations to order
- clinical diagnosis
Investigations to consider
- lumbar spine MRI
- lumbar spine x-ray
- lumbar spine CT
- erythrocyte sedimentation rate (ESR)
- C-reactive protein (CRP)
- urinalysis and culture
- blood cultures
- radionuclide bone scan
- electromyogram (EMG)
acute and subacute lower back pain (≤12 weeks)
chronic lower back pain (>12 weeks)
recurrent lower back pain
- Spinal stenosis
- Cauda equina syndrome
- Diagnosis and treatment of low back pain
- Noninvasive treatments for acute, subacute, and chronic low back pain
Back pain (lower back)
Back pain: questions to ask your doctorMore Patient leaflets
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