Dr. Jeffrey Alan Marchessault M.D.

We live in a world where there are infection-causing viruses and germs prevalent in large numbers. As medical science progresses and attempts to find cures and remedies for these viruses, the viruses change form, grow stronger and strike back causing other forms of illnesses. While there are...

COPD refers to chronic pulmonary disease, which is a chronic lung condition that causes shortness of breath in people. This breathlessness can be experienced either when the person is sitting and relaxing, or when a person performs an activity like exercising or walking. Overall, this kind of...

A colonoscopy is an examination that lets your health practitioner view the lining of your colon (large intestine). A thin and flexible tube known as a colonoscopy is used to thoroughly view the colon. A Colonoscopy is also applied when screening for precancerous or cancer growths inside the colon....

You may be a patient concerned about the symptoms of pneumonia or you may have a friend or relative with symptoms suggestive of pneumonia. There are no universal symptoms that apply to every individual. The symptoms will vary from person to person and depend on the specific situation of each and...

Over the course of our four million or so years of evolution, we humans have developed a highly-specialized immune system that is quite a warrior in combating infections. We are bombarded daily by bacterial and viral pathogens which have the potential to cause us serious illness, but, completely...

Carpal tunnel syndrome is a tingling, numbness, or weakness in the hands due to pressure on the Median nerve that is located in the wrist. Whenever you are faced with this challenge, you will be in discomfort after it progresses into the later stages. This is a condition that arises from stress...