This issue of Emergency Medicine Clinics focuses on Observation Medicine in the ED. Editors R. Gentry Wilkseron and Christopher Baugh have assembled an expert team of authors on topics such as: History and Principles of Observation Medicine; Observation Unit Design and Establishing an Observation Unit; Care of the Patient with Chest Pain in an Observation Unit; Care of Cardiovascular Conditions in an Observation Unit; Care of Gastrointestinal Conditions in an Observation Unit; Care of Metabolic / Endocrine Conditions in an Observation Unit; Care of Neurologic Conditions in an Observation Unit; Care of Respiratory Conditions in an Observation Unit; Care of Infectious Conditions in an Observation Unit; Care of Traumatic Conditions in an Observation Unit; Care of Extremes of Age in an Observation Unit.

This issue of Emergency Medicine Clinics, guest edited by Drs. Gentry Wilkerson, Sal J. Suau, focuses on Allergy, Inflammatory, and Autoimmune Disorders in Emergency Medicine. This issue is one of four selected each year by series Consulting Editor, Dr. Amal Mattu. Topics include: Allergy/Anaphylaxis, Anaphylaxis: Treatment in the ED, Drug Allergies, Food Allergies, Allergic acute coronary syndrome - Kounis Syndrome; Hereditary and Acquired Angioedema, Immunotherapy, Sarcoidosis, Spondyloarthritides and Autoimmune Connective Tissue Diseases.