Conditions list medically reviewed by George Krucik, MD, MBA
Allergic rhinitis, or hay fever, is your body's response to specific allergens. It causes uncomfortable symptoms like sneezing and itchy eyes.
Common colds and influenza are contagious infections that affect the respiratory system. Both are airborne illnesses, spread through coughing and sneezing. Shared…
Swine flu, or H1N1, is highly contagious and can spread quickly from person to person. A simple sneeze may cause thousands of germs to spread through the air.
Learn about what causes allergies, the different types of allergies, and how they're treated.
Agammaglobulinemia is an inherited immune system disorder in which the body is unable to produce antibodies.
Severe acute respiratory syndrome (SARS) is a serious form of viral pneumonia. The virus that causes SARS was first identified in 2003.
This feature is for informational purposes only and should not be used to diagnose. Please consult a healthcare professional if you have health concerns.