immune disorders
Physical Allergy
Diagnosis of Physical Allergy
A doctor's evaluation The diagnosis of physical allergies is based on symptoms and the circumstances in which they occur. To diagnose reactions caused by cold, doctors place an ice cube on the skin for 4 minutes, remove the ice cube, then watch for the development of a hive. People may be advised not to use cosmetics and skin creams, lotions, and oils for a while to help determine whether one of these substances may be worsening the allergy. 