Dispersed the endless pain around and about the liver (7)
I believe the answer is:
hepatic
'about the liver' is the definition.
(I know this)
'dispersed the endless pain around' is the wordplay.
'dispersed' is an anagram indicator.
'endless' means to remove the last letter.
'around' becomes 'c' (abbreviation for 'circa').
'pain' with its last letter removed is 'pai'.
'the'+'pai'='thepai'
'thepai' is an anagram of 'hepati'.
'hepati'+'c'='HEPATIC'
'and' is the link.
(Other definitions for hepatic that I've seen before include "Relating to the liver" , "Livery" , "Pertaining to, or affecting, the liver or liverwort" , "brownish-red" , "of an organ" .)