Hello. Thanks for writing to us.
I guess you are having a difficult time with all these symptoms. Let me try to make some suggestions
The first thing is the duration of dizziness. The long duration suggests me of some clinical pathology associated. Dizziness is a condition characterized with some imbalance between the body and spatial perception of the surroundings. The structures involved in this are inner ears, eyes, muscles, and nervous system. Dizziness can be physiological when there is decreased blood supply to brain as in dehydration, starving etc. Anxiety on the other hand has a definite relation to syncopal attacks. Also you have mentioned that you are afraid of open spaces (agarophobic). This also results in syncope by adding to your anxiety disorder.
As you have stated that you suffered from sinusitis, there is a pretty much chance that the infection from your sinus could spread to your inner ear resulting in these episodes. Chronic hyperventilation results in dizziness in 25- 30% of the cases. I would like to suggest a simple test, which is a gold standard for the diagnosis of hyperventilation. This should be done when you are not experiencing any of the above symptoms. Make sure you have an attendant beside and breathe rapidly for 2 minutes. If it triggers any of the symptoms that you had in dizziness, then we can arrive at the diagnosis of chronic hyperventilation. I recommend you to consider the following
1)Walk regularly in the mornings for atleast 30 minutes.
2)Drink plenty of water and have balanced diet to maintain the blood pressure.
3)Avoid places you are afraid of
4)Regularly practice some breathing exercises which not only help in increasing lung function but also in reducing the occurrence of sinus infection.
5)Try to reduce your respiratory rate atleast 2 times a day, where the no. of breaths per minute should not exceed 5.This helps in conditioning your respirations.
Above all, I request you to make an appointment with your ENT specialist for the proper management of sinusitis.
Hope this helps.