Conditions list medically reviewed by George Krucik, MD, MBA
A cold is a common viral infection of the upper respiratory tract–namely, your nose and throat. A runny or stuffy nose, sneezing, coughing, and sore throat are common…
Learn about what causes allergies, the different types of allergies, and how they're treated.
Allergic rhinitis, or hay fever, is your body's response to specific allergens. It causes uncomfortable symptoms like sneezing and itchy eyes.
Cluster headaches are severely painful and occur in cycles. Read more for tips on how to treat and relieve them.
This feature is for informational purposes only and should not be used to diagnose. Please consult a healthcare professional if you have health concerns.