A whole bunch of them.
I am seeing a psychiatrist tomorrow; I am hoping he will refer me to a neurologist who will order an MRI. I suspect I have a brain tumour however I have had several CT scans that turn up negative. They don't want to give me any more CT scans because of the X-ray dosage but MRIs don't have that problem.
I had surgery for obstructive sleep apnea in 2008; it worked really well. I was lucky, it has a high failure rate. Since then I can comfortably breathe through my nose, before that - for my entire life - I could not.
Turbinate cautery feels just like having a hot soldering iron shoved way up your nose.
I am also mentally ill. Some people think my mental illness is the result of sleep deprivation however there are numerous other contributing factors. When I was diagnosed with Bipolar-Type Schizoaffective Disorder in 1985 the doctors were concerned my symptoms were the result of a brain tumour so they gave me an EEG, CAT scan and neurological tests.
I wanted to be a chemist at first, I was heavily into it. My parents encouraged it as Dad was once a chemist and my mother's father was a surgeon. Unfortunately Mom gave me a bottle of mercury. It is powerfully toxic but only when metabolized in certain ways; the actual liquid is mostly harmless.
But I spilled it on the carpet. I recovered most of it with an eyedropper however I spilled it several times - it's quite cool to hold it in the palm of your hand - so quite a lot of it got in the carpet.
Childhood mercury vapor inhalation poisoning might not kill you but it will screw you up in spectacular ways. Among other things my hairline is visibly receding in photographs starting from when I was fourteen years old. I was completely bald at 21.