Response from Robert J. Frascino, M.D. ...Western Blot, which turned out to be negative. A reactive ELISA plus a negative Western Blot is considered to be a negative HIV test.. There are many potential causes for a falsely reactive ELISA test, including cross-reacting non-specific...
1 Asthma is an inflammation and narrowing of the airways that can cause shortness of breath, wheezing, chest tightness, and coughing. 2  Pneumonia is lung inflammation that is caused by infection. 3  Symptoms may include shortness of breath, cough, chest pain, chills, sweating, fever, muscle pain, and exhaustion.
1 First Cause of Shortness of Breath: Body Demands More Air. 2  Second Cause of Shortness of Breath: Too Little Airflow. 3  Third Cause of Shortness of Breath: Trouble Transporting Oxygen in the Bloodstream.  Final Cause of Shortness of Breath: Lack of Oxygen in the Air. Sometimes, there's just nothing you can do to make things better. At high altitudes, the air is too thin to contain an adequate supply of oxygen for the body's needs.