There is a common misconception that any adverse reaction to a drug is an allergy. That is definitely not the case. Reporting to your doctors that you have an allergy to a medication when what you really had was a side effect could potentially create a substantial alteration to your medical care in the future. And this could mean a physician might avoid using a drug that could possibly save your life because of the fear of an allergic reaction. An anaphylactic allergic reaction......