Much of the way children respond to traumatic events depends on their personality, their cultural background and their age and development. Knowing what to look for will help guide your assessment of how well the child is coping with their injury or illness.
Young children tend to respond more behaviorally and will there show you, rather than tell you, that they're upset or anxious. Children of school age look to adults for cues on how to respond to a medical event. They may discount verbal explanations if what they observe and notice does not match up with what adults are telling them. Teens can be more concerned about "here and now" issues, than about the future.
What do you notice about how children of different age groups respond to injury or illness?