Which of the following describes the classic triad for spinal infection?

• A. Headache; Nausea; Vomiting
• B. Cough; Night sweats; Weight loss
• C. Back pain; Fever; Neuro deficits
• D. Rash; Joint swelling; Fatigue

Answer: (C)

Spinal infections, such as vertebral osteomyelitis or spinal epidural abscess, typically present with a combination of local back pain, fever, and neurologic signs. The back pain reflects inflammation and involvement of the vertebrae or intervertebral discs. Fever signals systemic infection. Neurologic deficits arise when the infectious process or an accumulating abscess compresses the spinal cord or nerve roots, which is a critical danger sign requiring urgent imaging and treatment. The other symptom clusters don’t specifically indicate a spinal infection: headaches with GI symptoms are nonspecific, cough with night sweats and weight loss suggests pulmonary or systemic disease like TB, and rash with joint swelling points to rheumatologic or vasculitic processes. So back pain, fever, and neurologic deficits form the best descriptor of a spinal infection.