The world's most widely used medical reference now features expanded clinical focus on each category of disorder, as well as more specific guidance on patient examinations. The thoroughly revised and updated 18th Edition is packed with essential information on diagnosing and treating medical disorders to help medical professionals deliver the best care to their patients. This handy, compact guide was written by a team of clinicians for everyday use. Designed for maximum clinical utility, the new Merck Manual of Diagnosis and Therapy makes it easy to find the right information, right when it is needed. It is a must-have for medical students, residents, practicing physicians, nurses, and allied health professionals. Featuring: * All new ''approach'' chapters * All-new abstract summaries *341 total chapters *34 completely new chapters *69 new illustrations * New cross-referencing * Two-color presentation * Brand new content on: critical care medicine, metabolic syndrome, acute lung injury, biological warfare and terrorism, SARS, smallpox, and more