Strange itchy mood can cause division (9)

I believe the answer is:

dichotomy

'division' is the definition.
(thesaurus)

'strange itchy mood' is the wordplay.
'strange' indicates an anagram.
'itchy'+'mood'='itchymood'
'itchymood' is an anagram of 'DICHOTOMY'.

'can cause' is the link.

(Another definition for dichotomy that I've seen is " Division into two parts or kinds".)

I've seen this clue in The Irish Times.

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