Adverse reaction (7)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">adverse reaction</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for allergy that I've seen before include "Abnormal body reaction" , "Largely to do with adverse reaction" , "Immune reaction" , "Cause of ill-feeling" , "Abnormal reaction as to, say, pollen" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">adverse reaction</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for backlash that I've seen before include "Violent reaction to event, like reverse whip" , "Repercussion" , "Violent reaction to an event - using whip?" , "negative comments?" , "Hostile reaction" .)