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A substance that causes an allergic reaction.
- ‘Wherever possible, the most effective way of treating allergies is to avoid all contact with the allergen causing the reaction.’
- ‘If allergens in the air are an asthma trigger, pollutants can make the lungs even more sensitive to them.’
- ‘Gradually your body learns to accept the allergen as the harmless substance it is.’
- ‘Once a person is sensitized to an allergen or chemical, he or she may develop asthma.’
- ‘In such an enclosed environment, allergens from one food can spread to another.’
- ‘Allergies are caused by the body's immune system reacting to allergens as if they were harmful.’
- ‘Future exposure to the same allergens will cause the reaction to happen again.’
- ‘The next time you're exposed to the allergen, your immune system launches an allergic reaction.’
- ‘It is well known that vacuum cleaner bags capture large particles but can emit allergens that are too small to be collected in the bag.’
- ‘Avoid things that could make symptoms worse, such as air pollution and allergens.’
- ‘If you take away the allergens that were driving it initially, the inflammation is likely to continue.’
- ‘Substances that are normally harmless could act as allergens and trigger a reaction in certain people.’
- ‘Eliminate any known allergens such as certain foods, dust, or pet dander from your household.’
- ‘Your allergic reaction happens when your body's immune system mistakes the allergen for a harmful invader.’
- ‘First, allergic reactions are caused by allergens, the three most common ones being dust and mites, pollen and nuts.’
- ‘The goal is to desensitize you to specific allergens and decrease your need for medications.’
- ‘During allergy seasons, the local news broadcasts usually tell you what allergens are in the air.’
- ‘Your doctor may take tests to see what allergens are causing the hay fever symptoms.’
- ‘The rash usually clears if the allergen is no longer in contact with the skin, but recurs with any slight contact with it again.’
- ‘Whether your eczema is due to an irritant, such as detergent, or due to an allergen, such as nickel, care and treatment of your skin is the same.’
Early 20th century: blend of allergy and -gen.
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