Progressive neurological deficit
Worsening weakness, saddle anaesthesia or bowel/bladder change needs urgent review.
Red flags collected from every assessment page — not a substitute for clinical judgement.
Unexplained fever or night pain
Systemic features with musculoskeletal pain raise infection or malignancy concerns.
Trauma with inability to bear load
Ottawa-style rules and fracture pathways apply after significant injury.
Vascular or visceral signs
Chest pain, sudden severe headache, or abdominal symptoms are not “rehab problems” first.
Saddle numbness or bladder changes
Numbness in the groin or inner thighs alongside new bladder or bowel difficulty can indicate cauda equina syndrome, a surgical emergency.
Progressive leg weakness
Worsening motor weakness in the leg, rather than pain alone, suggests significant nerve compression and warrants prompt evaluation.
History of cancer, fever, or unexplained weight loss
These features raise concern for infection or malignancy affecting the spine and typically prompt further medical work-up.
Significant trauma or osteoporosis with new pain
A fall or known bone-fragility condition combined with new severe back pain raises concern for vertebral fracture.
Visible or palpable abdominal bulge
A new bulge in the abdominal wall, especially one that changes with coughing or straining, may indicate a hernia and should be evaluated by a physician.
Severe, sudden abdominal pain
Sudden, severe pain unrelated to a specific muscular strain can reflect an internal organ issue rather than a musculoskeletal one and warrants prompt medical assessment.
Pain with fever or gastrointestinal symptoms
Trunk pain accompanied by fever, nausea, or changes in bowel habits suggests a possible non-musculoskeletal cause requiring medical evaluation.
Groin pain with testicular or urinary symptoms
Lower abdominal or groin pain accompanied by urinary or testicular symptoms should be assessed by a physician rather than treated as a simple muscle strain.
Sudden, complete loss of motion after trauma
An inability to move the arm following a fall or collision raises concern for fracture or dislocation and should be evaluated urgently.
Visible deformity
An obvious change in the shoulder's contour after injury may indicate a dislocation or significant fracture requiring prompt medical attention.
Numbness or weakness spreading down the arm
Neurological symptoms extending beyond the shoulder can indicate nerve involvement, such as from the brachial plexus, and warrant further evaluation.
Fever or signs of infection at the joint
Warmth, redness, and fever around the shoulder raise concern for septic arthritis, a medical emergency requiring urgent care.
Visible deformity after trauma
An obvious change in the elbow's shape following a fall or direct blow raises concern for fracture or dislocation and warrants urgent evaluation.
Inability to move the elbow after injury
A sudden loss of the ability to bend or straighten the elbow after trauma should be assessed promptly.
Rapidly spreading redness and warmth
Signs of spreading infection around a swollen elbow, especially with fever, require urgent medical attention.
Progressive hand weakness or muscle wasting
Worsening weakness or visible muscle loss in the hand can indicate significant nerve compression and warrants further evaluation.
Deformity or inability to move after trauma
A visible deformity or an inability to move the wrist or fingers following a fall or direct injury raises concern for fracture and warrants urgent evaluation.
Progressive weakness or muscle wasting
Worsening weakness or visible loss of muscle bulk at the base of the thumb can indicate significant, longstanding nerve compression.
Signs of infection
Increasing redness, warmth, and swelling, particularly with fever, raise concern for infection in the hand and require prompt medical attention.
Sudden, complete loss of sensation
A sudden and complete loss of sensation in the hand, especially after trauma, should be evaluated urgently to rule out significant nerve or vascular injury.
Inability to bear weight after trauma
A sudden inability to bear weight on the leg following a fall, particularly in older adults, raises concern for hip fracture and warrants urgent evaluation.
Fever with hip pain
Hip pain accompanied by fever raises concern for joint infection, especially in children, and requires prompt medical assessment.
Unexplained weight loss with deep hip or groin pain
These features can occasionally indicate a non-musculoskeletal cause and should be assessed by a physician.
Sudden severe pain with a snap or pop
A sudden pop or snap followed by severe pain and inability to continue activity may indicate a significant muscle or tendon tear requiring evaluation.
Inability to bear weight after injury
A sudden inability to bear weight following a twisting or impact injury raises concern for fracture or significant ligament injury and warrants urgent evaluation.
Locked knee
An inability to fully bend or straighten the knee, often due to a displaced meniscus fragment or loose body, typically requires prompt evaluation.
Significant, rapid swelling after injury
Marked swelling developing within hours of an injury can indicate a significant internal injury such as a ligament tear and warrants assessment.
Signs of infection
Warmth, redness, and fever around the knee raise concern for septic arthritis, a medical emergency requiring urgent care.
Locked knee or inability to fully extend
A knee that cannot be fully straightened after injury may indicate a displaced meniscus fragment and should be evaluated promptly.
Signs of associated fracture
Significant bony tenderness or deformity after a high-energy injury raises concern for an associated fracture requiring imaging.
Gross knee instability with minimal force
A knee that feels grossly unstable even during simple daily movements suggests a more complex ligamentous injury requiring specialist evaluation.
Signs of compromised circulation
A cold, pale, or pulseless lower leg after a high-energy knee injury is a surgical emergency requiring immediate care.
Inability to bear weight after injury
An inability to take even a few steps immediately after an ankle injury, combined with specific bony tenderness, raises concern for fracture and typically warrants imaging.
Visible deformity
An obvious change in the shape of the ankle or foot after injury suggests possible fracture or dislocation and requires urgent evaluation.
Sudden calf pain with an audible pop
A sudden sharp pain at the back of the ankle with an audible pop during push-off may indicate an Achilles tendon rupture and should be assessed promptly.
Signs of compromised circulation
A cold, pale, or numb foot following injury is a medical emergency requiring immediate evaluation.
Sudden, severe vertigo with other neurological symptoms
New severe dizziness accompanied by slurred speech, facial drooping, or limb weakness can indicate a stroke and requires emergency evaluation.
Fainting or loss of consciousness
Balance problems accompanied by fainting spells warrant prompt medical evaluation to rule out cardiovascular or other serious causes.
New hearing loss with dizziness
Sudden hearing loss accompanying vertigo can indicate a specific inner ear condition that benefits from prompt evaluation.
Recent significant fall with injury
A fall resulting in head injury or suspected fracture requires immediate medical assessment separate from ongoing balance rehabilitation.
New sudden weakness, facial drooping, or speech difficulty
These are classic warning signs of a new or recurrent stroke (often remembered by the FAST acronym) and require immediate emergency medical attention.
Sudden severe headache
A new, unusually severe headache can indicate a hemorrhagic event and warrants urgent evaluation, particularly in someone with stroke risk factors.
New difficulty swallowing
New or worsening difficulty swallowing raises concern for aspiration risk and typically prompts a swallowing evaluation before continuing oral intake as usual.
Signs of blood clot in the leg
Swelling, warmth, and pain in one leg during recovery, particularly with reduced mobility, raises concern for deep vein thrombosis and requires prompt medical evaluation.