had a dentist appointment yesterd,the dentist injected local anesthesia(lidocaine)in the upper right part of my gum, shortly after i got swollen cheek and eye.i would like to know what really causes this reaction,this is not my first visit to the dentist,but 1st time that i've had a reaction to medicaion taken.have i develop an allergy to lidocaine or is it that a blood vessel was hit while doing the injection?or could it be due to food taken on previous day(meat/prawn/chicken/2 type of mushroom
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