Hay Fever

Definition

Allergic rhinitis is a collection of symptoms, mostly in the nose and eyes, which occur when you breathe in something you are allergic to, such as dust, dander, or pollen.

This article focuses on allergic rhinitis due to outdoor triggers, such as plant pollen. This type of allergic rhinitis is commonly called hay fever.

For information on other types of allergies, see:

• Allergies
• Allergy to mold, dander, dust
• Asthma

Symptoms

Symptoms that occur shortly after you come into contact with the substance you are allergic to may include:

• Itchy nose, mouth, eyes, throat, skin, or any area
• Problems with smell
• Runny nose
• Sneezing
• Tearing eyes

Symptoms that may develop later include:

• Stuffy nose (nasal congestion)
• Coughing
• Clogged ears and decreased sense of smell
• Sore throat
• Dark circles under the eyes
• Puffiness under the eyes
• Fatigue and irritability
• Headache
• Memory problems and slowed thinking