Medical Diseases & Conditions A-Z List

What is the A-Z Index?

The A-Z Index is a navigational and informational tool that makes the Web site easier to use. It helps you quickly find and retrieve specific information. The A-Z index is structured so that synonyms, acronyms, and cross-referencing provide multiple ways for you to access the topics and features on The index includes common and scientific terms to meet the needs of consumers as well as health professionals.