Dr. John E Yerg M.D.

According to a statistic, 65 million people have moderate to severe chronic obstructive pulmonary disease (COPD) around the world. More than 3 million people have died because of COPD in 2005, which corresponds to 5 percent of all deaths globally. This puts COPD as one of the major causes of...

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...

In many respects, Josh Llewellyn-Jones is a normal 30-year-old guy. As with many men his age, he’s into physical stamina and setting personal records. Referred to as a “fitness fanatic”, Josh has recently completed a successful 24-hour fitness challenge. The only competitor was Josh. And, he...

Pleurisy is the inflammation of the two-layered membranes lining your lungs. Your doctor can diagnose pleurisy after taking a careful history, complete physical exam, and investigations.During the diagnosis, your doctor will exclude all the other possible causes that have a similar presentation and...

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...

Cystic fibrosis is a disease affecting many people throughout the United States and the world. Yet, there is so much information out there that it is sometimes difficult to ascertain the most important facts. With this disease, you may have many lingering questions. How does someone get cystic...