The first step is realizing that you have a problem.
This step seems simple, but it's sometimes hard to admit. You can't help somebody that doesn't want to be helped.
You may miss the symptoms but there are symptoms and they can be detected and life threatening. Especially if we consider AIDS as an STD.
I believe the answer to be B. False
It helps your body get used to the allergen better. It just depends on the allergy.