Spots gatecrashers hanging around (4)
I believe the answer is:
rash
'spots' is the definition.
(I've seen this before)
'gatecrashers hanging around' is the wordplay.
'around' indicates a hidden word.
'RASH' is hidden within 'gatecrashers hanging'.
(Other definitions for rash that I've seen before include "Harum-scarum" , "Hotheaded" , "Foolhardy with skin ailment" , "Headstrong" , "spate" .)