Infection / Malignancy — the non-mechanical pain that doesn't settle

This entire page is free, permanently — all seven sections. Red flag content is never gated in CliniStudy.

Who: Anyone — but the risk sets matter. Prior cancer of any kind. Immunosuppression. Intravenous drug use. Recent infection, procedure or indwelling line.
What: Spinal or musculoskeletal infection (spondylodiscitis, vertebral osteomyelitis, epidural abscess) or malignancy (primary, or far more often metastatic).
How it behaves: Constant. Non-mechanical. Unrelieved by rest. Getting worse despite appropriate treatment.

The one thing to take from this page:

You are not screening with a checklist. You are noticing that the story doesn't cohere — flags arriving together, a course going the wrong way, in someone with a reason to be at risk.

You'll often be taught a red flag list. Here's what the evidence says about it.

This does not mean stop screening. It means stop treating a ticked box as a test, and start reading the cluster and the clinical course.

⚠️ No Australian screening standard exists — and no validated screening set exists anywhere. Anchored to the IDSA vertebral osteomyelitis guideline [1] and the Cochrane malignancy review [2]. Both non-Australian.

Five stages, in your course's order. On this pattern the history and the special questions carry almost all of it, and behaviour is where the alarm first sounds.

MAIN PROBLEM

"It's just there all the time and nothing touches it."
"It's worse than when I started with you."
"I've been waking at two or three every morning and I can't get comfortable."

BODY CHART

• Mark the pain, and mark whether it moves. Multi-region or migrating symptoms are part of this pattern.
• Note focal spinal tenderness as a point, not an area — disproportionate local tenderness matters here.
• Draw any mass or lymphadenopathy you find, and date the drawing.

BEHAVIOUR

This is where the alarm sounds first, usually before anyone says the word cancer.

M / In / P / Is coding that keeps failing is itself the finding.

HISTORY

• How long, and which direction? Progressive worsening over weeks in the absence of a mechanism is the shape that matters.
• How has it responded to appropriate treatment? Failure to improve is the one you are best placed to notice — but on its own it's a weak flag with a high false-positive rate (Henschke et al. 2013) [2]. Getting worse, or not improving alongside anything else on this page, is what should move you.
• Prior cancer — any type, any time. Ask it directly, ask it plainly, and record the answer either way.
• Recent infection, spinal procedure or injection, surgery, indwelling line, dental work.
• Intravenous drug use. Ask it without ceremony, as one item among several.

SPECIAL / SCREENING QUESTIONS

• Fever, chills, rigors, night sweats. Ask all four.
• Unexplained weight loss — how much, over how long, and was it intended.
• Fatigue and malaise out of proportion to the musculoskeletal problem.
• Immunosuppression — medication, treatment, or a condition their doctor manages.
• Bladder and bowel change, saddle change, progressive leg weakness — the cord and cauda equina screen runs alongside this one.

The two escalations inside the escalation

Metastatic spinal cord compression (MSCC). New or worsening spinal pain in a person with cancer — especially thoracic, localised, night or rest pain, or with any neurological change — is an oncological emergency. The neurological loss becomes fixed if you wait (Nair et al. 2014; Robson 2014; Gupta et al. 2026).

Spinal epidural abscess (SEA). Progresses rapidly, and the classic triad of back pain, fever and neurological deficit is uncommon. Diagnostic delay is the norm rather than the exception (Reihsaus et al. 2000; Alerhand and colleagues; Tetsuka et al. 2020; Durant et al. 2025; Long et al. 2022; Tande et al. 2026).

Neither is excluded by anything in your hands.