The chapter discusses assessing injuries and illnesses by performing a primary check, physical exam, and obtaining a medical history. The primary check determines if the person is responsive, breathing, and has life-threatening bleeding. The physical exam assesses the entire body for injuries. A SAMPLE history identifies the person's condition by learning about signs/symptoms, allergies, medications, pertinent medical history, last food/drink, events leading to the emergency. The assessment process helps first responders determine appropriate first aid care until emergency medical help arrives.