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
Thank
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
Thank
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
Get help from a real doctor now
Dr. Andrea Brand
Board Certified,
7M people helped
Continue
108,000 doctors available
Read more answers from doctors