Abdominal pain (5)
I believe the answer is:
colic
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">abdominal pain</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 colic that I've seen before include "Early pain" , "Gripe" , "gut reaction" , "suffering" , "Illness" .)