Dr. David C Mares MD

24 year old Brad Dell is a young man who is deaf and living with cystic fibrosis. In January of 2017, he received a double lung transplant from the University of California, San Francisco. When Dell is not testing out his new lungs with active physical activity or reading comic books, he is writing...

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...

Chronic Obstructive Pulmonary Disease (COPD) and lung cancer are two ends of the same spectrum. Though vastly different in core characteristics, they share many symptoms such as painful wheezing, a persistent cough, and the production of copious mucus. Both these diseases have similar causes and...

What is Bronchitis?We often run under weather catching a flu or a cold that stays on for a couple of days to weeks, after which we normally get back to normal. However, sometimes even a small infection of cold or flu, could turn into a bronchitis infection causing much disturbance to your normal...

The pathogens involved in pneumonia are bacteria, virus, fungus, rare parasites, and other microorganisms. Virus is the most common cause of pneumonia among babies and children. Adults with weak immune systems are vulnerable to bacterial pneumonia.Pneumonia Causing pathogens:The pathogens that cause...

What is a persistent cough?It can be annoying to have a cough that lasts for more than a couple of weeks. A cough is considered chronic or persistent if it does not go away after four weeks in children and eight weeks in adults. However, most persistent coughs are due to colds, flu, infection, or...