Which sign most strongly suggests spinal infection in a patient with back pain?

Which sign most strongly suggests spinal infection in a patient with back pain?

• A. Chronic low back pain without fever
• B. Fever or chills
• C. Pain worse with movement and improves with rest
• D. Recent dental pain

Answer: (B)

fever or chills signals a systemic infection, which is the strongest red flag for spinal infection. Infections such as vertebral osteomyelitis or discitis trigger a body-wide inflammatory response, so the presence of fever or chills with back pain greatly raises suspicion and warrants urgent medical evaluation (imaging like MRI and labs such as CRP/ESR and blood cultures). Without fever, back pain is more commonly mechanical or degenerative in nature, making infection less likely. The pattern of pain—worsening with movement and not accompanied by systemic signs—favors a non-infectious origin, while a recent dental issue could be a potential source of bacteremia but does not by itself indicate spinal infection without fever or other signs.

fever or chills signals a systemic infection, which is the strongest red flag for spinal infection. Infections such as vertebral osteomyelitis or discitis trigger a body-wide inflammatory response, so the presence of fever or chills with back pain greatly raises suspicion and warrants urgent medical evaluation (imaging like MRI and labs such as CRP/ESR and blood cultures). Without fever, back pain is more commonly mechanical or degenerative in nature, making infection less likely. The pattern of pain—worsening with movement and not accompanied by systemic signs—favors a non-infectious origin, while a recent dental issue could be a potential source of bacteremia but does not by itself indicate spinal infection without fever or other signs.