David Allen Welsh MD

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...

IntroductionNicotine is an alkaloid stimulant that comes from the nightshade family of plants, particularly from the leaves of tobacco. The type of nicotine found in tobacco plants is called Nicotiana tabacum. Nicotine can also be synthetically produced. Thousands of chemicals are contained in...

What is TelemedicineE-health, or telehealth (other terms for telemedicine), allows doctors who specialize in respiratory health make use of electronic tools and wireless devices to provide primary care consultations with their COPD patients. Through videos, photos, and live chats, referral with...

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...

Bronchitis can cause several other complications to arise if the condition worsens.AsthmaAsthma may put an effect on an individual’s performance at the workplace or at school. Children may miss school or college as a result of the difficulty in breathing. The lungs can become either partially or...

2-year-old James Alexander Cargal is a bubbly and energetic little boy who enjoys singing, dancing, and playing with his dogs. But he is also a fighter. James was diagnosed with cystic fibrosis at just three weeks old. CF is a genetic disease that mostly affects the lungs, triggering persistent lung...