Many primary care clinicians are busy to the point of being overwhelmed and there is not time to do thorough evaluations on every patient. The outpatient clinician must be able to quickly identify and manage the overtly ill but also those with potential or even hidden issues that require a referral to the emergency department. This book provides a concise yet comprehensive summary of the various conditions the primary care practitioner could encounter in his/her office that require emergency department referral. Organized system by system, this manual provides short, readable yet detailed descriptions of situations where the clinician must make the quick decision to escalate the level of care. The book is comprised of thirteen main sections, each detailing a medical specialty and is further broken down into specific conditions within these specialties. The specialties that are featured are cardiology, dermatology, endocrinology, gastroenterology, HEENT, hematology and oncology, infectious disease, nephrology, neurology, gynecology, ophthalmology, psychiatry, pulmonology and urology.