Today I saw a general practitioner and she said that I should see an ENT doctor and possibly a neurologist.
An ENT doctor said that vertigo may be caused by three disorders: vestibular neuronitis, Meniere's disease or paroxysmal positional vertigo. Maybe I have the last mentioned disorder. In one semicircular canal there may be some precipitate, or the otoconia are dislocated.
Some movement manouvers can cure the disorder. I don't know whether the head shaking, ear buzzing and pain are caused by the same or another condition. Maybe I have some infection in my head, because a lymph node has grown in size and is sometimes sore. I have chronic sinusitis, but the present condition is more like an ear infection. The ENT doctor had a look in my ears and found nothing which could suggest an ear infection.
In the future I have an appointment with a neurologist.
Muscular dystonia is unlikely to be responsible for vertigo though both could be related to a common primary cause such as CNS lesion. Yes, vertigo could result from infections/ inflammations involving the vestibular apparatus.
Hope the information is helpful.
Thanks for your answer.
The vertigo has gone away. I had pain in the left side of my head, from the jaw through the ear area to the temple. It was intermittent and lasted about three months. Sometimes I fealt ill with only slight temeperature increase. According to ENTs I had no marks of infection in my ear or pharynx. Another ENT doctor said that I should go to a neurologist to decide whether it could be trigeminal neuralgia.
No, it was not trigeminal neuralgia, as I myself also thougth that it wasn't. The neurologist first said that he does not know what it could be. Then, after some thinking, he said that it could be caused by dystonia and I should get botulinum toxin.
I don't have much pain in the area any longer. Only sometimes hints of it. Instead, I have some inflammed areas in my mouth. Maybe the sublingual salivary glands are inflammed one after the other. I often find minute sialoliths.
Meanwhile I am waiting for botulinum toxin injections, I am thinking that I preferly have some infection or inflammation in my pharynx-mouth-sinus area. I have had chronic sinusitis, but it has been better recently except for the postnasal drip which persists.
I am afraid of botulinum toxin. Should I take this medicine? I am tired of meeting ENT doctors, because they do not find anything wrong with my ears etc. Only one lymph node sometimes is slightly tender, and that is, they say, OK. I think that dystonia cannot cause slight temperature rise or sore lymph nodes.
I would like to ask another question: Could a weak detrusor muscle result from the same cause as dystonia? The grade of weakness varies much with time, and the condition has existed for many years. Nowadays worst in the mornings. Sitting (eg. using the computer) has also long been somewhat difficult.