Handled (4,2)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">handled</span>' is the definition.<br/ ><span class="explanation-format__explanation">('treat' can be a synonym of 'handle')</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for treated that I've seen before include "Gave medical care" , "Handled" , "Dealt with" , "Applied medication to" , "Nursed" .)
(Another definition for seen to that I've seen is " Sorted out".)