Twenty years ago allergy testing was a common procedure for the family doctor.

Soon afterwards he had full allergy testing in hospital.

A simple steroid nasal spray can be very effective in these cases, although specific allergy testing may not be able to track down the exact trigger.

Allergy testing can either show allergies that are not actually causing symptoms or miss allergies that do cause symptoms.

This can be accomplished by having patch tests, one of various methods commonly known as allergy testing.