What is the difference between adverse effects versus allergies?
An allergy is a disorder of the immune system in which a severe inflammatory response takes place after an allergen enters the body. An adverse effect is the same as a side effect and causes harm or illness to body.
An allergic reaction is a histamine response to what the body perceives as an invader. An adverse reaction is a potential side effect of a medication.
Adverse effect is the generic term for all ill effects of a drug. An allergic reaction is specific kind of AE. The other answers are good definitions of an allergic reaction.
what is the effect on the community for people with allergies