2 doctors weighed in:
Why did I get loratadine allergy?
2 doctors weighed in

Dr. Paul Carter
Internal Medicine - Allergy & Immunology
1 doctor agrees
In brief: Exposure
All allergies are developed by an immune system reaction to the substance in question.
Therefore, allergy requires previous exposure. If you are prone to allergy problems, you can develop an allergy to a particular substance at anytime after you become exposed to it. It sometimes take only a few exposures and other times it takes many exposures.

In brief: Exposure
All allergies are developed by an immune system reaction to the substance in question.
Therefore, allergy requires previous exposure. If you are prone to allergy problems, you can develop an allergy to a particular substance at anytime after you become exposed to it. It sometimes take only a few exposures and other times it takes many exposures.
Dr. Paul Carter
Dr. Paul Carter
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