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.
Shortness of breath has many causes affecting either the breathing passages and lungs or the heart or blood vessels. An average 150-pound (70 kilogram) adult will breath at an average rate of 14 breaths per minute at rest. Excessively rapid breathing is referred to as hyperventilation. Numerous diseases of muscles and the nervous system can lead to shortness of breath by weakening the body's capacity for opening the lungs up for respiration. 2  Examples of muscle diseases include muscular dystrophy. 3  Nervous system diseases, such as paralysis, can lead to shortness of breath.