This form of cure is sometimes recommended by doctors (6)
I believe the answer is:
cruise
'this form of cure is sometimes recommended by doctors' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
'this form of cure is' is the wordplay.
'this form of' is an anagram indicator (the letters need to be in another 'form').
'cure'+'is'='cureis'
'cureis' with letters rearranged gives 'CRUISE'.
Can you help me to learn more?
(Other definitions for cruise that I've seen before include "Holiday afloat - Kidman's ex" , "Tom, say" , "Ship holiday" , "Sail smoothly" , "Coast" .)