Tender areas (5)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">tender areas</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for sores that I've seen before include "Lesions" , "Diseased spots" , "Painful spots on roses" , "Skin infections" .)