Confusing medical lecture (7)

I believe the answer is:

declaim

'lecture' is the definition.
(thesaurus)

'confusing medical' is the wordplay.
'confusing' is an anagram indicator.
'medical' is an anagram of 'DECLAIM'.

(Other definitions for declaim that I've seen before include "Rail against" , "Deliver (words) impressively" , "Harangue" , "Medical (anag)" , "Orate" .)

I've seen this clue in The Independent.

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