Pain also leads to article about account given by hospital (9)
I believe the answer is:
toothache
'pain' is the definition.
(toothache is a kind of pain)
'to article about account given by hospital' is the wordplay.
'article' becomes 'othe' (I am not sure about this - if you are sure you should believe this answer much more).
'about' indicates putting letters inside.
'account' becomes 'ac' (abbreviation for account).
'given by' means one lot of letters go next to another.
'hospital' becomes 'H' (abbreviation for hospital).
'ac'+'h'='ach'
'othe' going around 'ach' is 'othache'.
'to'+'othache'='TOOTHACHE'
'also leads' is the link.
This may not be right. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for toothache that I've seen before include "Oral discomfort" , "Odontalgia" , "It causes grief" , "Cause of sore mouth" , "Pain in the mouth" .)