Hay fever: Symptoms, diagnosis, and treatment
Last updated Tue 20 June 2017
By Joseph Nordqvist
Reviewed by Alana Biggers, MD, MPH
Hay fever, or allergic rhinitis, is a common condition with symptoms similar to those of a cold. There may be sneezing, congestion, runny nose, and sinus pressure.
It is caused by an allergic response to airborne substances, such as pollen. The time of year it happens depends on what substance, or allergen, the person reacts to.
https://www.medicalnewstoday.com/articles/160665.php
