Urgent Care · Common Complaints
Back Pain
The vast majority of back pain seen in urgent care is mechanical and self-limited. The clinician's job is to identify the small subset with cauda equina syndrome, spinal epidural abscess, vertebral fracture, cord compression from metastatic disease, ruptured AAA, or pyelonephritis — and to avoid unnecessary imaging in everyone else. This page covers red flags (saddle anesthesia, urinary retention or incontinence, fecal incontinence, fever + IV drug use or recent procedure, age > 70 or steroids, progressive neuro deficit), the minimum safe first-pass workup including a complete neuro and rectal exam when warranted, conservative outpatient management with NSAIDs and early mobilization, escalation criteria, documentation patterns that protect you, and clear return precautions. Written for NPs, PAs, and MDs in outpatient practice.
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Urgent Care · Common Complaints
Back Pain
Why this symptom matters
The vast majority of back pain is mechanical and self-limited. The job is identifying the small subset with cauda equina, epidural abscess, fracture, malignancy, or AAA — and avoiding unnecessary imaging in the rest.
What must I not miss first?
- Cauda equina syndrome
- Spinal epidural abscess
- Vertebral fracture (esp. older adults, trauma, steroids)
- Cord compression / metastatic disease
- Ruptured AAA
- Pyelonephritis / nephrolithiasis
Red flags — escalate or work up urgently
- Saddle anesthesia, urinary retention or incontinence, fecal incontinence
- Bilateral leg weakness or progressive neuro deficit
- Fever, IV drug use, recent spinal procedure, immunocompromise (epidural abscess)
- History of cancer, unexplained weight loss, night pain
- Significant trauma, or any trauma in osteoporosis or chronic steroid use
- Pulsatile abdominal mass or tearing pain radiating to back (AAA / dissection)
- Anticoagulated patient with new severe back pain
Immediate Management — While You Work It Up
- Neurological assessment immediately — test saddle area sensation, bilateral leg strength, and ask about bladder and bowel function. Any deficit is cauda equina until proven otherwise — call 911.
- Position of comfort — do not force ambulation.
- Ketorolac 30 mg IM or ibuprofen 600 mg PO — first line for acute pain if no contraindication. Use caution with renal impairment and in older adults.
- Cyclobenzaprine 5 mg or methocarbamol 750 mg PO — for muscle spasm. Use lowest effective dose in older adults due to fall risk, sedation, and anticholinergic burden. Avoid in adults 65 and older if possible — Beers Criteria.
- Do not give opioids as first line — if used, document clinical reasoning, functional impact, and why non-opioid options were insufficient.
- Ice or heat per patient preference — for acute muscle strain while workup proceeds.
Minimum safe first-pass workup
- What to ask: onset, mechanism, radiation, neuro symptoms, bowel/bladder, fever, weight loss, cancer history, anticoagulation, IVDU, prior back surgery
- What to examine: vitals, focused neuro exam (motor, sensation, reflexes, perineal sensation, post-void residual if concern), straight-leg raise, palpation for midline tenderness, abdominal/pulse exam in older adults
- Bladder scan if retention concern
- UA + pregnancy test if appropriate
- Imaging is NOT routine for < 6 weeks of mechanical pain without red flags
What can usually be managed outpatient
- Acute mechanical low back pain < 6 wk without red flags: NSAIDs, activity modification, early return to activity
- Sciatica without progressive neuro deficit: same plus consideration of physical therapy
- Chronic mechanical back pain in established patient with reassuring exam
- Muscle strain after clear mechanism in young patient with normal exam
When to escalate to ED / higher level of care
- Any cauda equina concern (urinary retention, saddle anesthesia, bilateral neuro deficit)
- Suspected spinal epidural abscess (fever + back pain + risk factor)
- Suspected vertebral fracture in older adult, trauma, or steroid use
- Cord compression concern in cancer patient
- Suspected AAA or aortic dissection
- Anticoagulated patient with new severe pain
What to document when the diagnosis is still uncertain
- Detailed neuro exam — motor, sensation, reflexes, perineal sensation
- Post-void residual if any concern for retention
- "Cauda equina / epidural abscess / fracture / malignancy / AAA considered because… ruled out because…"
- Why imaging was or was not ordered (cite no red flags < 6 wk)
- Treatment, return precautions, follow-up
Safety-net & return precautions to give
- Return or call 911 for new weakness in legs, numbness in groin/buttocks, trouble urinating or controlling bowels, fever, severe abdominal or chest/back pain, or weight loss.
- Stay active within tolerance — bed rest worsens recovery.
- Follow up with PCP if not improving in 4–6 weeks.
Geriatric-specific modifiers (apply on top of the above)
The guidance above applies to all adult patients seen in this setting. Layer the points below for adults 55+, geriatric (65+), and frail younger adults — they are additions, not replacements.
Back pain in older adults is never "just musculoskeletal" until dangerous causes are ruled out. Even mild pain — or a vague complaint of weakness or decreased mobility — can signal a vertebral compression fracture, cord compression, epidural abscess, AAA, pyelonephritis, or metastatic disease.
Older adults often present without classic symptoms. A patient who simply "can't get out of the chair like usual" may have a new fracture, retention, or impaction driving the pain.
- Lower the threshold for imaging in adults 55+ with new severe back pain, recent steroid use, osteoporosis, history of cancer, or a recent (even minor) fall.
- Always palpate the abdomen and check pulses — AAA can present as isolated back pain in older adults.
- Bladder scan and rectal exam when there is any concern for cauda equina, retention, or impaction — these are common, easily missed mimics.
- Anticoagulated patients with new severe back pain need imaging to exclude a spinal epidural hematoma.
- Avoid muscle relaxants when possible — cyclobenzaprine, methocarbamol, and benzodiazepines are Beers-listed and increase falls and delirium. If used, choose the lowest dose for the shortest duration.
- NSAIDs: consider AKI, GI bleed, and HF risk before prescribing in older adults.
- A normal HR or BP does not reassure — beta-blockers and pacemakers blunt the response to pain and bleeding.
Educational guidance for clinicians. Not a substitute for clinical judgment. Always individualize to the patient and your local resources.
Evidence sources
- · ACP Low Back Pain Guidelines 2017
- · Choosing Wisely imaging recommendations
- · AGS Beers Criteria
- · AGS Geriatric ED Guidelines
Review status
Last reviewed: 2026-04
Reviewed by the MyClinicianGuide editorial team. Cadence: annual.
Educational reference for licensed clinicians (NP, PA, MD, DO). Not a substitute for clinical judgment, institutional protocols, or specialty consultation. Apply in context of the full clinical picture, patient goals, and current standards of care. See About AI guidance for AI-related limitations.
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