Emergency Red Flags Certain symptoms during concussion recovery demand immediate emergency evaluation. These red flags suggest potential complications beyond a standard concussion, including intracranial bleeding (epidural or subdural hematoma), cerebral edema, or structural injury that requires urgent medical intervention (Stiell et al., 2001). Most concussions recover uneventfully. Red flags are uncommon but recognizing them early changes outcomes significantly. When in doubt, err on the side of emergency evaluation. The cost of an unnecessary ER visit is low compared to the cost of missing a neurosurgical emergency. Symptoms Requiring Immediate Emergency Care Worsening headache that doesn't respond to rest or medication. Concussion headaches typically improve gradually. A headache that progressively intensifies over hours, despite rest and appropriate pain management, suggests increasing intracranial pressure from bleeding or swelling. This is the most common presentation of delayed intracranial hemorrhage. Repeated vomiting. One episode of nausea or vomiting immediately after injury is common. Repeated vomiting, especially beginning hours after the initial injury, indicates rising intracranial pressure and warrants immediate imaging. Seizure. Any seizure activity following head trauma requires emergency evaluation. Post-traumatic seizures indicate cortical irritation that needs assessment and monitoring. Even a single brief seizure warrants urgent care. Increasing confusion or drowsiness. Concussion patients should become more alert over time, not less. Progressive difficulty staying awake, worsening disorientation, or inability to recognize familiar people or places suggests deteriorating brain function from an evolving lesion. One-sided weakness or numbness. Weakness affecting one arm, one leg, or one side of the face suggests focal brain compression. This is not typical of concussion and indicates structural pathology requiring imaging. Unequal pupils. One pupil significantly larger than the other (anisocoria) suggests uncal herniation from expanding intracranial mass effect. This is a neurosurgical emergency. Clear fluid from nose or ears. Cerebrospinal fluid leaking from the nose (rhinorrhea) or ears (otorrhea) indicates a skull base fracture. This requires hospital admission and monitoring. Neck stiffness with fever. While neck stiffness alone is common after concussion (from cervical injury), neck stiffness combined with fever and headache suggests meningitis, which requires urgent evaluation. Concerning (Non-Emergency) Warning Signs These symptoms don't require emergency room visits but warrant prompt medical attention within 24-48 hours: Symptoms worsening after initial improvement. Steady improvement followed by significant deterioration suggests a new factor is involved. This could be overexertion, medication reaction, or evolving cervical or vestibular dysfunction. New symptoms appearing after 1-2 weeks. Late-onset anxiety, depression, visual changes, or balance problems emerging weeks after injury indicate developing post-concussion complications that need clinical evaluation. Inability to tolerate any activity. If light, sound, movement, and cognitive effort all produce severe symptoms weeks after injury, the recovery trajectory has stalled and specialist evaluation is needed. Significant sleep disruption. Complete inability to sleep, or sleeping 14+ hours daily beyond the first few days, indicates dysregulated recovery patterns that benefit from medical management. Safe Movement During Monitored Recovery While watching for red flags, these gentle exercises support your recovery without risk: JME 1 Gentle cervical rotation maintains neck mobility without increasing intracranial pressure. JME 5 Cervical extension addresses forward head posture without straining recovery. JME 14 Chin tucks provide safe cervical stabilization during the monitored recovery period. JME 42 Shoulder mobility reduces upper body tension while maintaining safe activity levels. Start your 14-day free trial for guided gentle mobility during recovery. Upper Body Support JME 84 Shoulder range of motion maintains upper body function during activity-restricted recovery. JME 151 Thoracic mobility keeps the upper back mobile during rest-heavy recovery phases. JME 164 Scapular movement patterns prevent postural decline during monitored recovery. JME 153 Upper back mobility prevents stiffness without increasing symptom risk. Monitoring at Home First 24-48 hours are critical. Most delayed complications present within the first 48 hours. During this window, have someone check on you every 2-4 hours, including waking you at least once during the night for the first night. Use a symptom checklist. Rate headache, nausea, dizziness, confusion, and drowsiness on a 0-10 scale every few hours. Stable or decreasing scores are reassuring. Increasing scores warrant closer monitoring and potential medical contact. Trust your instincts. If something feels wrong, seek evaluation. Patients often notice subtle changes before they become obvious on examination. "I feel different" or "something isn't right" are valid reasons for medical evaluation after head trauma. Know your local resources. Identify the nearest emergency department and know how to get there. Program emergency numbers into your phone. If you're alone, arrange for someone to check on you or stay with you for the first 48 hours. What to Tell Emergency Staff If you go to the emergency department, provide: Time of injury and mechanism. When exactly the injury occurred and how (fall, collision, sports impact, vehicle accident). Loss of consciousness. Whether you lost consciousness and for how long. Any witnesses who observed the event. Symptom progression. How symptoms have changed since injury. Were they improving then worsening? What specific symptom triggered the ER visit? Medications and blood thinners. Anticoagulant use (warfarin, Eliquis, Xarelto) significantly increases intracranial bleeding risk after head trauma and changes management decisions. Support your monitored recovery with simplmobility's gentle mobility routines. Should I go to the ER right after a concussion? Seek immediate ER evaluation if you lost consciousness for more than 30 seconds, experienced a seizure, have significant confusion, vomit repeatedly, or take blood thinners. For milder concussions with no red flags, urgent care or primary care evaluation within 24-48 hours is appropriate. How long after a concussion should I worry about complications? The highest risk period for delayed complications is the first 48 hours. After 72 hours without red flag symptoms, the risk of acute surgical complications drops significantly. However, monitor for gradual symptom worsening throughout the first 2 weeks. Do I need a CT scan after every concussion? Not every concussion requires CT imaging. Clinical decision rules (Canadian CT Head Rule) guide which patients need scanning based on specific risk factors: age over 65, blood thinner use, dangerous mechanism, repeated vomiting, amnesia, and focal neurological signs. Your healthcare provider applies these criteria during evaluation. What if my symptoms fluctuate during recovery? Daily fluctuation in symptom intensity is normal during concussion recovery. The concerning pattern is progressive worsening over hours to days, not day-to-day variation. Good days and bad days within an overall improving trend are expected and not red flags. References Stiell, I. G., et al. (2001). The Canadian CT Head Rule for patients with minor head injury. The Lancet, 357(9266), 1391-1396. PubMed McCrory, P., et al. (2017). Consensus statement on concussion in sport. British Journal of Sports Medicine, 51(11), 838-847. PubMed