Hay fever, also called allergic rhinitis, is caused by an overactive immune response to harmless allergens. Here's a breakdown of hay fever causes, symptoms, and related factors:What Triggers Hay ...

Hay fever, also known as allergic rhinitis, is the condition responsible for seasonal allergies or allergic reactions to other environmental allergens, like dust mites and animal dander. Estimates ...

Children as young as two can suffer from hay fever, but many parents find it hard to tell if a child has an allergy or another illness, making it hard to treat. Hay fever, which is also known as ...