Needing a cure, do set out for the country (7)
I believe the answer is:
ecuador
'the country' is the definition.
(Ecuador is an example)
'needing a cure do set out' is the wordplay.
'needing' becomes 'a' (I can't explain this - if you can you should give a lot more credence to this answer).
'set' is an anagram indicator (instruction to set the letters).
'out' means one lot of letters goes inside another.
'cure'+'do'='curedo'
'curedo' anagrammed gives 'ecudor'.
'a' put inside 'ecudor' is 'ECUADOR'.
'for' is the link.
Can you help me to learn more?
(Other definitions for ecuador that I've seen before include "Land" , "Quito's nation" , "Country of the Galapagos Islands" , "S. American nation" , "South American republic" .)