Trauma of celebrity caught coming in for bit of temazepam (4)
I believe the answer is:
scar
'trauma' is the definition.
I don't understand the rest of the clue.
(Other definitions for scar that I've seen before include "Evidence of an old injury" , "Evidence of a past injury?" , "It shows where wound was" , "Mark on body or tree" , "One left after having wound" .)