Welcome in H.C.M.
I have gone through your query regarding dizziness in your child who had been operated for tympanoplasty
6 weeks back and was having ear packing, recently he had got hit over his adam's apple, which made him little dyspnoic but soon he recovered.
Now you are having doubt about dizziness weather it is due to recent trauma over adam's apple or a complication of tympanoplasty operation.
Since after sustaining injury over neck your son recovered soon and during feeling of dizziness he had no respiratory distress
therefore neck injury
may be ruled out . On the other hand gauge packing of ear may be the reason for giving infection to labyrinth which may result in dizziness.But this demands a thorough examination of ear along with these investigations-
1- Pure tone audiometry
2- Vestibular function test.
For getting immediate relief you may give to your child-
b- Maintain electrolyte .
c- Take rest.
Finally he should be thoroughly examined by an ENT doctor / Neurologist
to find out the real pathology.