Is It Possible to Suddenly Develop Allergies?1
- Health
- April 29, 2020
? By Nathaniel Hare, MD Allergist, UPMC For those who suffer from seasonal allergies, you know that this time of year can be a challenge. Flowers, trees, and grasses are in bloom and growing which means pollen and other allergens are in the air. In the U.S., an estimated 18 million adults have hay fever



























