How Do You Know When A Person Is Allergic?

The person who is allergic usually knows all too well in which season he suffers, for example, from hay fever when he/she goes into the open air. However, he/she doesn't necessarily know to which pollen he/she is sensitive. It is for that reason that diagnostic testing is used to identify the causative pollen.

In most cases personal observation (case history) is helpful to the doctor in deciding which allergens to test for, in order to obtain a precise diagnosis. This is important when deciding about the most appropriate treatment.