Allergic rhinitis is a group of symptoms affecting the nose. These symptoms occur when you breathe in something you are allergic to, such as dust, dander, insect venom, 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.

Causes, incidence, and risk factors

An allergen is something that triggers an allergy. When a person with allergic rhinitis breathes in an allergen such as pollen or dust, the body releases chemicals, including histamine. This causes allergy symptoms.

Hay fever involves an allergic reaction to pollen. A similar reaction occurs with allergy to mold, animal dander, dust, and other allergens that you breathe in.

The pollens that cause hay fever vary from person to person and https://www.cialissansordonnancefr24.com/generique-cialis/ from area to area. Tiny, hard-to-see pollens often cause hay fever. Examples of plants that cause hay fever include:

  • Trees
  • Grasses
  • Ragweed

The amount of pollen in the air can affect whether hay fever symptoms develop. Hot, dry, windy days are more likely to have increased amounts of pollen in the air. On cool, damp, rainy days most pollen is washed to the ground.

Some disorders may be linked to allergies. These include eczema and asthma.

Allergies are common. Your genes and environment may make you more likely to get allergies.

Allergies often run in families. If both your parents have allergies, you are likely to have allergies too. The chance is greater if your mother has allergies.

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

People with allergic rhinitis often have allergy symptoms that also involve the eyes.

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