Table 3

Risk factors that may prolonger complicate recovery from SRC

Concussion HistoryTotal number, proximity, severity (duration)
SymptomsTotal number, severity (intensity and especially duration)
SignsProlonged LOC (>1 min)
SusceptibilityConcussions occurring with lower impact magnitude and/or requiring longer recovery
AgeYouth and adolescent athletes may recover more slowly
Pre-existing conditionsMigraine, attention deficit hyperactivity disorder (ADHD), learning disabilities (LD), depression, anxiety/panic attacks, motion sickness/sensitivity
  • LOC, loss of consciousness; SRC, sport-related concussion.