SECONDARY SURVEYS LOOK FOR EXTERNAL CLUES FOR CASUALTY As part of your Assessing the Casualty, “How to check casualty for injury?” look for external clues to a casualty’s condition. If you suspect drug abuse, take care as he may be carrying needles and syringes. You may find an appointment card for a hospital or clinic or a card indicating a history of allergy, diabetes, or epilepsy horse-riders or cyclists may carry such a card inside their riding hat or helmet. Food or medication may also give valuable clues about the casualty’s condition; for example, people with diabetes may carry sugar lumps or glucose gel. A person with a known disorder…