Allergic rhinitis is an allergic inflammation of the nasal airways. It is a diagnosis associated with a group of symptoms affecting the nose. It occurs when an allergen, such as pollen, dust, or animal dander (particles of shed skin and hair) is inhaled by an individual with a sensitized immune system. Symptoms can also occur when you eat a food that you are allergic to.

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
• Watery 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