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The fizzing sound you hear can be due to any of the following causes:
- A chiari malformation - this is a malformation in the brain which causes rushes of spinal fluid at the base of the neck. It is also associated to some extent with pressure headaches and nausea. A mild chiari malformation can cause no other symptoms and do not need any treatment.
- Irritation of the vagus nerve. The vagus nerve innervates a large number of organs, including the stomach and the larynx (throat). If the nerve is irritated, especially due to acid reflux ( which is common in the early morning), it can cause a reflux irritation in the eustachian tube which can present as a strange noise in and around the ear.
- Other conditions in the inner ear like infections can also cause these type of sensations.
Please consult an ENT specialist as well as a neurologist for a thorough checkup.
Yes, lightheadedness and grainy vision can be symptoms of a chiari malformation. But they could also be due to problems with the eyes, especially if you occasionaly have eye twitches or migraines behind the eyes.
Lifestyle changes would not affect a chiari malformation directly. But obesity, poor posture, hypertension can cause the symptoms of chiari malformation to increase. So, lifestyle changes - diet, exercise etc. - to control these conditions can also reduce chiari symptoms to some extent.
I hope this helps.