Burden and context in sub-Saharan Africa

LBP is common across all adult age groups and is a major driver of disability and lost productivity. In many physiotherapy and settings, patients may present late, have limited access to imaging/physiotherapy, and use traditional or informal care alongside biomedical care. A safe approach to primary care is to:

(1) identify red flags early, 

(2) avoid routine imaging for typical non-specific LBP, and 

(3) prioritize education, activity, and simple, low-cost interventions while addressing psychosocial drivers of chronicity.

Primary-care triage
Step 1: Any red flags? If yes → urgent evaluation ± labs/imaging and refer/transfer.
Step 2: No red flags → classify: non-specific (most), radicular (leg pain/neurology), or specific suspected (inflammatory/visceral/other).
Step 3: Start first-line care for non-specific LBP and uncomplicated radicular pain: 

Education + stay active + exercise plan + appropriate analgesia.
Step 4: Review in 2–4 weeks (earlier if severe pain or functional limitation). If worsening, new neurology, or no improvement by 6–8 weeks → reconsider diagnosis, investigate, and/or refer.

Classification

Classify LBP into 3 practical groups (approximate proportions):
1) Non-specific LBP (90–95%): no clear pathoanatomical cause; usually improves with conservative care; routine tests not needed.
2) Radicular syndrome (5–10%): nerve root involvement (often disc herniation/degenerative change) with leg-dominant pain ± paresthesia, weakness, or reflex change.
3) Specific LBP (~1%): identifiable serious pathology (e.g., infection, malignancy, fracture, inflammatory disease) requiring targeted investigation and treatment.

Mechanisms (why pain persists)

LBP is multifactorial: mechanical strain and inflammation may trigger acute pain, while central sensitization and psychosocial factors can maintain symptoms in chronic LBP. Fear-avoidance, low mood, and maladaptive coping increase disability and are key treatment targets and supporting a biopsychosocial approach.

Assessment in primary care
A) Focused history: onset/duration (acute <4 weeks; subacute 4–12; chronic >12), mechanism (lift/strain/trauma), pain pattern (back vs leg dominant), impact on function/work, prior episodes, comorbidities (e.g., osteoporosis risk, steroid use, immunosuppression), systemic symptoms, and patient beliefs/expectations.
B) Focused examination: posture/gait; palpation and range of motion; neuro exam (power, sensation, reflexes); straight leg raise if radicular symptoms; hip exam if indicated.
C)Screen for red flags (see below).
D) Screen for psychosocial risk (“yellow flags”): fear avoidance, low mood/anxiety, high distress, sleep problems, workplace conflict/job dissatisfaction, catastrophizing, low self-efficacy, and maladaptive coping. These predict chronicity and guide early supportive interventions.

Red flags (urgent evaluation and referral/transfer)
Neurological emergency: acute urinary retention/overflow incontinence, fecal incontinence, saddle anesthesia, bilateral severe sciatica, progressive or severe motor weakness (suspect cauda equina/cord compression).
Infection: fever, rigors, spinal tenderness with systemic illness, immunosuppression, recent invasive procedure, or strong clinical concern (consider TB in chronic presentations where relevant).
Malignancy: previous cancer, unexplained weight loss, night pain unrelieved by rest, systemic symptoms, age extremes with atypical features.
Fracture: significant trauma; minor trauma in older/frail patients; osteoporosis; prolonged corticosteroid use.
Other: suspected inflammatory back pain (e.g., morning stiffness >30 min, improvement with exercise, alternating buttock pain) or suspected visceral/abdominal cause.

Yellow flags (risk of persistent pain/disability)
Fear of movement, catastrophizing, depression/anxiety, high stress, poor sleep, social adversity, ongoing compensation/litigation issues, and negative expectations about recovery. Address early with reassurance, graded activity, and where available brief psychological/behavioural support.

Differential diagnosis (quick)
Common: lumbar strain/sprain, disc herniation, facet pain, spinal stenosis, spondylolisthesis.
Consider serious causes: malignancy, spinal infection, vertebral fracture, inflammatory spondyloarthropathy, and referred pain from abdominal/pelvic pathology.

Investigations (use selectively)
Do not order routine tests for typical non-specific acute LBP without red flags.
When to investigate: red flags; suspected specific cause; progressive neurological deficit; or persistent symptoms not improving with appropriate care (commonly >6–8 weeks).
What to order (based on availability and clinical suspicion):
• Basic labs: FBC, ESR/CRP when infection/inflammatory disease or malignancy is suspected.
• Plain X-ray: suspected fracture or structural deformity; limited value for non-specific LBP.
• MRI (preferred) / CT: suspected cauda equina, malignancy, infection, or severe/progressive radiculopathy when imaging will change management. If MRI is not accessible, prioritize referral/transfer rather than delayed testing when neurological emergency is suspected.

Management (stepwise, primary care)
1) First-line for non-specific LBP (and uncomplicated radicular pain)
• Explain and reassure: most episodes improve; set expectations; avoid fear-based messaging.
• Stay active: encourage normal activity and early return to work with temporary modifications; avoid prolonged bed rest.
• Exercise: simple home programme (walking, stretching, core strengthening) and/or group/community-based exercise where available; consider supervised physiotherapy if accessible.
• Heat and simple self-care strategies (safe lifting, ergonomics).
2) Pharmacological options (adjuncts, lowest effective dose, shortest duration)
• NSAIDs (if no contraindication) are commonly used for short courses; consider gastroprotection when indicated and screen for renal/GI risk.
• Simple analgesics as appropriate per local guidance and availability.
• Muscle relaxants: consider only short-term in selected patients; monitor sedation and safety.
• Neuropathic agents may be considered for clear radicular neuropathic pain where locally recommended; reassess benefit and adverse effects.
• Avoid or restrict opioids to short-term rescue in exceptional cases with clear plan for stop, due to dependence and limited long-term benefit.
3) When to refer
• Immediate referral/transfer: any red flags (especially cauda equina/progressive weakness).
• Early referral (days–weeks): severe radiculopathy with motor deficit; suspected specific pathology; major functional impairment despite initial management.
• Non-urgent referral: persistent pain >6–12 weeks with functional limitation despite adequate conservative care; high psychosocial risk needing multidisciplinary input.
4)Procedures and surgery
Interventions (e.g., epidural steroid injections, facet procedures) and surgery are specialist-level options for selected cases; primary care should focus on correct triage, conservative care, and timely referral when indicated.

Follow-up (what to do at review)
• Review in 2–4 weeks for acute non-specific LBP (earlier if severe pain or work disability).
• Re-check for new red flags and repeat focused neuro exam if symptoms changed.
• Track function (walking, sitting, work, sleep) rather than pain score alone.
•If improving: reinforce activity/exercise and taper medicines.
• If not improving by 6–8 weeks, or worsening at any time: reconsider diagnosis, investigate selectively, and/or refer.

Prevention and control (practical)
• Promote regular physical activity and progressive strengthening (including core/hip).
• Teach safe lifting and workplace ergonomics using locally feasible modifications.
• Address modifiable risks: smoking, obesity, physical deconditioning, and poor sleep.
• Encourage early, active management of new episodes to reduce chronicity (avoid prolonged rest and passive treatments).

Author’s Reflections

In the Nigerian primary care setting, LBP is a very common outpatient presentation and reflects an interaction between clinical, cultural, and psychosocial factors. Patient beliefs, often shaped by traditional ideologies and practices, significantly influence health-seeking behavior and treatment adherence. A patient-centered approach and emphasizing empathy, shared decision-making, and individualized care which is essential in addressing patients’ perceptions. Education on posture, ergonomics, and physical activity plays a central role in management. Integrating psychosocial support and multidisciplinary care improves outcomes. Therefore, a culturally sensitive, holistic approach is critical in optimizing LBP management in primary care.

Conclusion

Low back pain is a very common condition influenced by several factors and carries substantial effects on individuals and society at large. Most low back pain cases are non-specific and can be optimally treated using a comprehensive and biopsychosocial approach. Best outcomes depend on recognizing risk factors early, using investigations appropriately, and focusing on conservative, patient-centered care.