Concussions affect roughly 1.6% of Canadians aged 12 and older each year, and while most recover within four weeks, a significant portion don't. Studies estimate that anywhere from 11% to over 50% of concussion patients develop persisting symptoms after concussion (PSaC) — spanning physical, cognitive, sleep, and mood-related domains. Experts warn that certain groups, including children, older adults, women, and those with prior concussions or mental health histories, face a higher risk of prolonged recovery.

One of the most actionable insights for clinicians: the number and severity of symptoms in the early post-injury period are among the strongest predictors of who will struggle long-term. Early education, follow-up planning, and — if symptoms last beyond 2–4 weeks — referral to multidisciplinary care are key. Crucially, extended rest is now discouraged; beyond the initial 24–48 hours, both physical and cognitive rest have been shown to hinder, not help, recovery.

Key Takeaways:

• Early symptom burden (number + severity) is the best predictor of prolonged recovery
• PSaC symptoms span four domains: physical, cognitive, sleep, and mood/behavioral
• Prolonged rest beyond 48 hours is not recommended — targeted, symptom-specific treatment is preferred
• Primary care physicians are on the front lines; refer to specialists if first-line therapies fail

Why it matters: With specialized concussion clinics unable to handle the volume of cases, primary care and emergency physicians are increasingly responsible for managing PSaC. Staying current on evidence-based guidelines isn't just good practice — it's essential for closing the gap in equitable, timely concussion care.