Dictionary

allergen: A substance that causes an immune system reaction but is not, in fact, a threat to a person’s health.

allergy: An unnecessary reaction by the immune system to an allergen.

antihistamines: A medicine that blocks histamines, often used to treat allergies.

bermuda grass: A gray-green creeping grass sometimes used for lawns and grazing land in the United States.

congestion: An accumulation of mucus, especially in the nasal passages, ears or throat.

cromolyn: An antihistamine usually taken through an inhaler to stop allergy-induced asthma attacks.

decongestant: A medicine that reduces mucus production and congestion.

dichondra: A creeping herb with small white flowers; can be used as a substitute for grass in temperate parts of the world.

dogwood: Any of several trees and shrubs from the Cornus genus, sometimes with leafy parts that look like flowers.

environment: The combination of physical conditions where a person lives.