7 doctors weighed in:

Why would my cousin be allergic to my cat when he was never allergic to cats in the past? He sneezes a lot.

7 doctors weighed in
Dr. Gregory Hines
Family Medicine
5 doctors agree

In brief: Allergies change

Adults change their allergies on average every seven years.
Just because you have been allergic to something does not mean that you always will be, and new allergies can happen.

In brief: Allergies change

Adults change their allergies on average every seven years.
Just because you have been allergic to something does not mean that you always will be, and new allergies can happen.
Dr. Gregory Hines
Dr. Gregory Hines
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Dr. Steven Levine
ENT - Head & Neck Surgery

In brief: Allergies

Allergies develop with repeated exposure.
The more an individual who has a propensity to get allergies is exposed to an antigen, the more likely to develop allergy to that antigen. Your cousin is not allergic to your cat. He's become allergic to all cats, probably because of the repeated exposure to yours.

In brief: Allergies

Allergies develop with repeated exposure.
The more an individual who has a propensity to get allergies is exposed to an antigen, the more likely to develop allergy to that antigen. Your cousin is not allergic to your cat. He's become allergic to all cats, probably because of the repeated exposure to yours.
Dr. Steven Levine
Dr. Steven Levine
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