Overexposure can lead to this star getting shot (9)
I believe the answer is:
sunstroke
'overexposure can lead to this' is the definition.
'star getting shot' is the wordplay.
'star' becomes 'sun' (Sun is an example).
'getting' is a charade indicator (letters next to each other).
'shot' becomes 'stroke'.
'sun'+'stroke'='SUNSTROKE'
(Other definitions for sunstroke that I've seen before include "Debilitating condition occurring in hot climates" , "Problem caused by too much solar exposure" , "We may avoid it under awning" , "Malady of UV exposure" , "Hot summer day ailment" .)