Hair loss (8)
I believe the answer is:
alopecia
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">hair loss</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for alopecia that I've seen before include "Partial or complete absence of hair on the body" , "Loss of cover" , "Baldness (medical)" , "Loss of hair, baldness" , "23" .)