Identify two primary red flags in spine-related pain that necessitate urgent imaging or referral.

• A. Any mild back pain that improves with rest.
• B. New bowel/bladder dysfunction (cauda equina syndrome) and fever with severe focal spinal pain.
• C. Chronic fatigue and dizziness.
• D. Localized neck stiffness with no fever.

Answer: (B)

Red flags in spine pain signal potential urgent pathology that needs immediate imaging or specialist referral. The two most critical are new bowel or bladder dysfunction and fever with severe focal spinal pain. New bowel/bladder functioning changes indicate cauda equina syndrome, where nerve roots supplying the lower limbs and pelvic organs are acutely compressed. This is a surgical emergency; prompt MRI to identify the cause and urgent decompression can prevent permanent bladder, bowel, or leg motor deficits. Fever with severe focal spinal pain points to possible infection of the spine or surrounding structures—such as vertebral osteomyelitis, discitis, or an epidural abscess. This requires urgent MRI with contrast, blood work, and coordination with spine/infectious disease specialists to start treatment quickly. The other scenarios described (mild pain improving with rest, nonspecific fatigue/dizziness, or isolated neck stiffness without fever) are not by themselves red flags and do not automatically require urgent imaging or referral unless accompanied by additional concerning signs.