1. Bronchitis  (Trust Mark: Doctor-Reviewed)
Bronchitis is an inflammation of the main air passages to the lungs. Bronchitis may be short-lived (acute) or chronic, meaning that it lasts a long time and often recurs. See also: Chronic obstructive pulmonary disease (COPD)• Reviewer: Benjamin Medoff, MD, Assistant Professor of Medicine, Harvard Medical School, Pulmonary and Critical Care Unit, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

2. Medical Tests  (Trust Mark: Doctor-Reviewed)
Evaluations done to provide information on health and to assist in identification of a condition or diagnosis of disease or injury. Medical tests are used to provide information to health care providers about a person's health status. Some tests r...