Log from high tip of nut tree (5)
I believe the answer is:
enter
'log' is the definition.
(as in logging or entering information to a record)
'high tip of nut tree' is the wordplay.
'high' is an anagram indicator (can mean drunk or on drugs and hence disordered).
'tip of' indicates taking the first letters.
The initial letter of 'nut' is 'n'.
'n'+'tree'='ntree'
'ntree' is an anagram of 'ENTER'.
'from' is the link.
(Other definitions for enter that I've seen before include "A key on the right" , "Move into" , "Join (for the first time)" , "Register (as a competitor)" , "Come in - register" .)