I'm 19 years old and I've been having these spells for about 5 years now. Most often the symptoms are minor and include loss of vision/blackout as well as similar effects on my hearing, along with a tingling/buzzing sensation all over my body but is concentrated on my tongue, hands, and feet. They happen when I stand up from laying down or sitting. They occur anywhere from once a week/biweekly to several times a day. The symptoms are sometimes more severe. These times include the blackout/hearing loss and tingling, but those symptoms are much worse, and also include uncontrollable shaking all over my body, weakness, and I need to sit down or hold onto/lean on something to prevent myself from falling over. I experienced similar symptoms after giving blood once. That time resulted in passing out (I'm not sure how long I was out for, and it was due to not eating before donating, no one's fault but my own). They can last anywhere from 5 seconds (the lightest ones) to a minute (the most severe. This has only happened about 3 times).
I've done some research and have found things like hypoglycemia and some types of seizures that fit the symptoms, but I'd like someone else's opinion?
It does sound neurological, perhaps something about the vagus nerve. There are probably a number of neurological conditions that could be causing these spells. I couldn't name them all for you, but a neurologist could certainly help. Have you seen one before? I do have experience with neurologic Lyme Disease, and all of your symptoms could possibly be caused by Lyme.
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