Chronic obstructive pulmonary disease (COPD) is a lung condition that often hides in plain sight. You may think you're ...

Learn more about current thinking regarding COPD and find out how three different mechanisms of airflow obstruction play a role in COPD pathogenesis.

Night blindness is caused by vitamin A deficiency, congenital mutations, and other eye diseases. Learn about symptoms, causes, testing, and treatment.

As temperatures rise across the U.S., here’s what you need to know about high humidity and how it can affect you.

Infectious bronchitis virus (IBV) is ubiquitous in most parts of the world where poultry are reared and is able to spread very rapidly in non-protected birds. It is shed via both the respiratory tract ...