Dr. David M Callahan D.O.

Recommended Articles

• What is Lupus?

  Lupus is a chronic inflammatory autoimmune disease that attacks the body’s healthy cells, tissues, and organs. The inflammation can damage the skin, joints, kidneys, lungs, heart, brain, and blood vessels.Normally, the body’s immune system produces antibodies. These antibodies protect and fight...

• What Are the Causes and Symptoms of COPD?

  Chronic obstructive pulmonary disease or COPD is a lung disease that affects breathing. Airflow to the organ is blocked due to the damage to lungs....

• The Fight Marches On: Making Life-changing Medicine Available to Everyone with Cystic Fibrosis

  Every day, people coping with cystic fibrosis (CF) strive to live their lives to the fullest, from exercising and managing their everyday care to tackling obstacles head-on and raising awareness. Throughout the years, CF communities have been making their mark and pushing for better care. Today,...

• What Causes Pneumonia?

  Pneumonia is a lung infection that is caused by bacteria, viruses, or parasites. Moreover, pneumonia can develop in just one lobe of the right or left lung, the entire lung, or both of the lungs simultaneously. The primary characteristic of this lung disease is the inflammation of the air sacs or...

• What Causes Asthma?

  Asthma refers to the chronic inflammatory disease of the respiratory system. The causes for asthma differ depending on the individual. During an asthma attack, the airways become narrow, inflamed, and begin to fill with mucus. This makes breathing a difficult task, and leads to coughing and...

• How Is Sarcoidosis Diagnosed?

  What is sarcoidosis?Sarcoidosis is an inflammatory disease, which is characterized by the growth of granulomas or tiny collections of inflammatory cells in various parts of the body. When the immune system is slowed down and when these numerous clumps form, they tend to interfere with the organ’s...