Dust mites: Microorganisms found in dust and mattresses in homes are the most important cause of allergies.
Pollen: Pollen from plants, trees, and grasses can be inhaled through the wind and enter the nose (especially during flowering seasons).
Mold: Molds that grow in damp areas of homes can cause sneezing and allergies when inhaled.
Pets: Pet hair, small cells on the skin (dander), and saliva can cause allergies in some people.
Air pollution: Smoke from vehicles, smoke from factories, and smoking can irritate the lungs and nose.
Strong odors: Perfumes, incense sticks, paint odors, and cleaning solutions can quickly cause sneezing in people with allergies.
Weather change: Hot, cold, or sudden changes in weather can worsen allergy symptoms.
