Vertigo as a result of nasty snide digs (9)
I believe the answer is:
giddiness
'vertigo' is the definition.
(I've seen this before)
'nasty snide digs' is the wordplay.
'nasty' is an anagram indicator.
'snide'+'digs'='snidedigs'
'snidedigs' with letters rearranged gives 'GIDDINESS'.
'as a result of' is the link.
(Other definitions for giddiness that I've seen before include "State of excitable frivolity" , "Excitability and frivolity" , "Vertigo" .)