Drug allergy and Food Allergy

Drug allergy unwanted side effect to certain medication.Food allergy same like Drug Allergy in effect,commonly skin reaction (rash).nousea ,vomiting, Diarrhea and swelling In mouth and throat. Drug allergy commonly occured secand time use of the medicine not first use.
Drug allergy is ife-threatening conditin but rare to couse Death.
Skin reactions of Drug allergy is measles-like rash so we