Thanks PhysioBob, the information provides a clear view of how to test one possibility which may explain Alan's symptoms. Alan, the mild symptoms you have can indicate a mild case of BPPV ie not causing the room to spin. ENT testing has not found anything sufficient to be of concern, but this does not mean that something of a low level to cause symptoms has been ruled out. There are many tests for many things however as good as tests can be they do not always pick up abnormalities. ENT specialists are generally not concerned with symptoms that are of a low grade and unlikely to cause serious problems even though the patient can be seriously disaffected by the problem. The usual response from a specialist is that no life threatening or progressively damging disease is present so the patient should be happy to live with the symptoms. Most patients are unhappy with this view and persevere in looking for relief.
Without changing my mind on the Epley suggestion, it should also be stated that low grade sinus or nasal congestion can cause car sickness and foggy head due to eustachian tubes not equalising pressure at the back of the ear drum. Such problems and BPPV can be missed by ENT exams and scans. You may have a mild case of allergy - if so have you tried non sedating anti histamines, sinus wash out or steam inhalations? Before taking antihistamines you should check with your Doctor or Pharmacist especially if you have not taken them before.
To answer some questions - Yes your symptoms can be caused by BPPV. I do not think you need a balance disorder Specialist at this stage. If you have a Physiotherapist in Townsville familiar with the Epley treatment see them. Ask the Australian Physiotherapy Association Queensland Branch who in Townsville could help you. If you cannot find someone that has done the procedure I can provide someone of your choice with information, but they could just as easily look it up. Yes it is possible that the neck and inner ear are acting together, as explained in my previous posts. The symptoms you have can cause secondary effects.
My comments to Dr Damien about the C1-2 subluxation were made because Chiropractors use this terminology. Were you neck X-Rays done by and reported to a Chiropractor?
I can guide you through the other suggestions (steam inhallation, sinus washout )if you wish, just let me know.