Stuff provided initially for painful condition (5)
I believe the answer is:
cramp
'painful condition' is the definition.
The answer and definition can be both states of affairs as well as being singular nouns.
Maybe there's an association between them I don't understand?
'stuff provided initially' is the wordplay.
'stuff' becomes 'cram' (cramming is a kind of stuffing).
'initially' indicates taking the first letters.
The first letter of 'provided' is 'p'.
'cram'+'p'='CRAMP'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for cramp that I've seen before include "Form of muscular pain" , "Muscular spasm, very painful" , "Painful muscular contraction" , "Contract" , "Muscle spasm" .)