Thanks for the query to H.C.M. Forum.
One thing I want to make cleat that removal of nasal polyp is nothing to do with dizziness
, spinning head,staggering gait.
However there was coincidence that you develops these symptoms.
Now almost 7 months passed after surgery ,so consult a physician and get in his opinion. Vertigo
and spinning are may be due to Hypertension
Age factor is very important and play a crucial role in vertigo. Chronic sinusitis
also play a role due to eustachean tube involvement.
There are so many reasons.
Consultation is very important.
Hope I have answered your question.
If further any question i will reply.