Table 1 ‘Windows of vulnerability’ in post-concussion syndrome
  Time after injury
  Possible emerging factors
  0-24 h (immediate symptoms)   Mainly organic factors
  1 day-4 weeks (early symptoms)   Overdoing and failing tasks
    Increase in life demands following recuperation
    Misattribution of symptoms to malignant causes that have been missed
    Difficulties coping with cognitive impairments
    Initial concerns regarding longevity of symptoms/disabilities
    Dissonance regarding severity of head injury and severity of symptoms/disabilities
  1-6 months (medium-term symptoms)   Unhelpful premorbid schemas and coping responses related to managing abnormal life events; inability to complete tasks; frustration and ‘mind over matter’ coping
    Concerns regarding potential permanence of symptoms
    Unhelpful strategies for coping with uncertainty (particularly uncertain aetiology of symptoms)
    Misperception of having suffered a severe brain injury
  Over 6 months (long-term or possibily permanent symptoms)   Lack of understanding/belief from others
    Compensation-claim factors
    Issues relating to adjustment to long-term disability
 
  Unhelpful ‘secondary’ coping strategies (those employed following failure of initial strategies)