Allergic rhinitis is a common condition caused by an allergic reaction to airborne substances such as dust, pollen, mold, or pet dander. When a person with allergies inhales these triggers, the immune system reacts by releasing chemicals that cause inflammation inside the nose. This leads to symptoms like sneezing, nasal congestion, runny nose, and itchy eyes. Proper diagnosis and treatment can help control symptoms and improve daily comfort and breathing.

1. Common Causes of Allergic Rhinitis:
   • Pollen: Seasonal pollen from trees, grasses, and weeds can trigger allergies.
   • Dust Mites: Tiny organisms commonly found in household dust.
   • Pet Dander: Skin flakes from cats, dogs, and other animals.
   • Mold Spores: Mold in damp environments can cause allergic reactions.
   • Air Pollution: Smoke, chemicals, and environmental pollutants may worsen symptoms.