As I teach my medical students and residents on hospital rounds and in the outpatient setting, children do not usually present to their primary care doctors with a written sign that indicates a specific diagnosis. It is a tough job for primary care providers to sift out who is really sick. This intuition often takes years of practice and a feeling of knowing when something is just not right. It also is extremely important to pay attention to the child's family caregivers, who know their child...



