Dr. George David Gass M.D.

IntroductionOrthopnea is the medical term used when referring to the occurrence of dyspnea (shortness of breath) when you are lying flat. This symptom is often a sign of heart failure. However, orthopnea can also be due to other health conditions. Dyspnea (shortness of breath) is not the same with...

The Nature of Cancerous CellsEvery cell in the human body is programmed to carry out a specific role. For example, a red blood cell carries oxygen to tissues, a white blood cell wards off infection, and an intestinal cell absorbs nutrients in the digestive tract. All these cells are programmed to...

Scars are a fact of life for those suffering from Cystic Fibrosis (CF). From ports to transplants and pacemakers, most people with CF have at least one scar. Not to mention, the dark circles under their eyes from exhaustion and fatigue. Living with CF is tough; it can be draining both mentally and...

What is Bronchiectasis (BR) and how it is related to Rheumatoid Arthritis (RA)? It is known that there is a strong association with RA and various pulmonary disorders such as BR. How these two conditions are connected is less clear and something that has been being examined for some time. However...

Asthma is a lung condition where the lung bronchioles constrict and get filled with mucus, narrowing the passage for air to pass through. It is a non-curable condition. However, the symptoms can be suppressed with proper medication, exercise (as prescribed by the doctor, or else, doing inappropriate...

What is a barking cough?The medical term for a barking cough is croup. It is a medical condition that tends to irritate a child's upper airways. It can also be used to describe the inflammation of the larynx and trachea in children. There are a variety of reasons or inflammatory conditions, which...