Female returning contraceptive gets rash (6)
I believe the answer is:
madcap
'rash' is the definition.
(thesaurus)
'female returning contraceptive' is the wordplay.
'female' becomes 'dam' (dam is a kind of female**).
'returning' says the letters should be written backwards.
'contraceptive' becomes 'cap'.
'dam' written backwards gives 'mad'.
'mad'+'cap'='MADCAP'
'gets' acts as a link.
(Other definitions for madcap that I've seen before include "Hare-brained" , "Eccentric or reckless person" , "Lively" , "terror" , "Insane headgear for wildly impulsive person" .)