13 year old son nausea dizzyness vomiting
This forum is for questions and support regarding neurology issues such as:
Alzheimer's Disease,
ALS,
Autism, Brain Cancer,
Cerebral Palsy, Chronic Pain,
Epilepsy,
Fibromyalgia, Headaches, MS, Neuralgia, Neuropathy, Parkinson's Disease, RSD, Sleep Disorders,
Stroke, Traumatic Brain Injury

I guess my main point is so many diverse symptoms are exhibited that you and the doctors might be "unable to see the forest because of the trees".
Get a 2nd opinion. Don't get brushed off, there should some serious testing. The opthomologist and ENT persons probably didn't look outside their Habitual "boxes". They certainly didn't for me. An experienced endocrinolist need to be involved to look for chemical/hormnal/etc changes others might miss. I suspect that finding someone experienced with peneal gland problems is even harder than for pituitary glands. Don't know where you live, but my neurosurgeon was (is) exceptional and does nothing but tumors mostly in that portion of the brain. (Two to four ops a day.) Unfortunately for me, he was so good he got lured away to S. Calif. to head up a head clinic of some sort. If you are in that part of the country I could secure relevant contact info for you, if you need it.
I advise to see a good neurologist because the neurosurgeon will only be dealing with the problem intensely immediately before surgery and shortly thereafter. The neurologist is set up to spend more time pinpointing the exact causes and then informs the neurologist. The neurologist will also be the person dealing with long run after care for the most part. I didn't see a neurologist before surgery because my gp found the problem and I had to have "almost" emergency surgery. But afterwards although seeing the neurosurgeon from time to time to check "gross mechanical" healing aspects, it is the neurologist that I see on a recurring basis to decipher/keep up with the aftermath.
Money wise the neurologist will also cost less. (Yes, "less" is a somewhat misleading term when the choices are very costly or even more costly!)