I have also had anxiety. I will have episodes of my heart pounding, out of the blue. my anxiety gets worse if I do not effectively treat my sleep apnea. sleep apnea has been associated with IIH. some people with sleep apnea have an airway problem during the day as well, and I did until I had tongue surgery. I felt like I was suffocating all the time, and had episodes of shortness of breath and lightheadedness that would come on while eating or taking pills (swallowing). I think if your airway narrows slowly you may not realize you are feeling like you can't breath and you will just feel anxiety. any decrease in ventilation from this will raise intracranial pressure. sooo.... take a look in the mirror at your tongue. does it fit inside your dental arches or does it look large, are there scalloping marks around the edges? practice breathing normally and with your jaw jutted forwards; do you breathe a lot better with your jaw forwards? these might be clues as to whether your airway is an issue. I suspect that the forward head posture that develops in this scenario may lead to problems with CSF drainage. my DO says that this will narrow the jugular foramen, something shown to be associated with IIH.
also, any snoring at all is abnormal. any minor degree of sleep apnea will raise ICP because the hypoventilation that can be present even without snoring can increase cerebral blood flow and therefore the ICP. so any sleep issues at all in IIH and I would be wanting to rule out sleep apnea.
Deb