Allergen: meaning, definitions and examples

Use 'allergen' when referring to a substance that causes an allergic reaction in susceptible individuals. This is often used in medical and health-related contexts.

• Pollen is a common allergen during the springtime
• The doctor conducted tests to identify the specific allergens affecting the patient

This term is somewhat interchangeable with 'allergen' but might be used more formally or scientifically to describe the substance that causes allergic symptoms.

• Pet dander is a known allergic agent for many people
• Scientists are researching various allergic agents to understand their effects better

The word 'trigger' is used to describe anything that initiates a reaction or event, including allergic reactions or asthma attacks. It emphasizes the cause-and-effect relationship.

• Dust can be a trigger for asthma attacks
• Stress is often a trigger for migraines

An 'irritant' is a broader term used to describe a substance that causes discomfort or inflammation, and not necessarily an allergic reaction. This can include chemical, physical, or biological factors.

• The smoke from the fire was a powerful irritant, causing everyone to cough
• Certain cleaning chemicals serve as irritants to the skin

Typically used in medical or scientific contexts to specifically refer to substances that can cause allergic reactions.

• Pollen is a common allergen for many people.
• Food allergens must be clearly labeled on packaging.

Also used in medical or scientific contexts, often interchangeably with 'allergen', but might be used more formally to indicate agents that trigger allergies.

• Pet dander is an allergic agent that can cause respiratory issues.
• Doctors seek to identify the allergic agent responsible for the patient's symptoms.

Primarily used in medical or scientific discussions to indicate substances that can sensitize individuals to allergens, making them more likely to have allergic reactions in the future.

• Repeated exposure to the same chemical can act as a sensitizer.
• Nickel is a common sensitizer in various consumer products.

Usually used in political or social discussions to refer to someone or something that provokes or incites disturbance; not typically used to refer to allergens. It has a negative connotation.

• The speaker was seen as a provocateur, intentionally stirring up controversy.
• His actions were those of a provocateur, aiming to incite a reaction from the crowd.