6 doctors weighed in:
What is does it mean for something to be an allergen?
6 doctors weighed in

Dr. Steven Machtinger
Internal Medicine - Allergy & Immunology
3 doctors agree
In brief: Triggers allergies
An allergen is any substance, usually a protein but occasionally a carbohydrate, drug or metal, that upon entering the body is perceived by the immune system as being foreign.
If the immune reaction results in immediate hypersensitivity like asthma or anaphylaxis or contact dermatitis like poison ivy or poison oak then that foreign substance has acted like an allergen.

In brief: Triggers allergies
An allergen is any substance, usually a protein but occasionally a carbohydrate, drug or metal, that upon entering the body is perceived by the immune system as being foreign.
If the immune reaction results in immediate hypersensitivity like asthma or anaphylaxis or contact dermatitis like poison ivy or poison oak then that foreign substance has acted like an allergen.
Dr. Steven Machtinger
Dr. Steven Machtinger
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Dr. Martin Ostro
Internal Medicine - Allergy & Immunology
2 doctors agree
In brief: It causes allergy
Allergen means to cause an allergic reaction, which means the substance, almost always a protein or a medication, stimulates the production of allergic antibodies (ige) so when the substance is ingested an allergic reaction occurs.

In brief: It causes allergy
Allergen means to cause an allergic reaction, which means the substance, almost always a protein or a medication, stimulates the production of allergic antibodies (ige) so when the substance is ingested an allergic reaction occurs.
Dr. Martin Ostro
Dr. Martin Ostro
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Dr. Alan Ali
Psychiatry
In brief: Allergen
Substance that stimulates an allergic reaction.

In brief: Allergen
Substance that stimulates an allergic reaction.
Dr. Alan Ali
Dr. Alan Ali
Thank
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