First of all I’m taking allergy shots, but I’m confused because it doesn’t make sense to me that injecting an allergen can make your body more immune to an allergen whereas constant exposure to allergens (non shot-related) does not seem to be helpful at all.

I’ve heard people say that their pet allergies "went away" after living with a new pet or something, but mine have never done this.

So in a nutshell, why does injecting an allergen through allergy shots help with immunity, while having other types of exposure to allergens make symptoms worse? You’d think if I’m constantly exposed to dust mites, then it’d build up an immunity. I’ve read all kinds of stuff, but I don’t seem to be able to find an answer.

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