You're welcome!
Adderall is some pretty nasty stuff I reckon it's not on sale here in Europe in most countries.
Incontinence appears not to be one of its side effects so it must have been something indirectly linked with it or something you haven't noticed.
When you say low O2 is giving you dizziness you refer to the nocturnal "choking" and dyspnea? dyspnea when lying horizontally is called Orthopnea. I just ran into this maybe it can help you
http://www.ncbi.nlm.nih.gov/books/NBK213/
If you think you have low oxygenation of the brain during the day in absence of respiration symptoms that would be pretty strange. to remove all doubt you could buy a Pulse Oximeter keep it with you all the time, that can tell if the problem is from respiration. otherwise it could be vascular like neck artery or neurological.
Spinal tap and spinal MRI could reveal something but probably not EMG.
My problems also started a few months ago, not that I was doing great before, just like you, but this was totally different. I believe it started sometime between September and December but I fully realized only in January-February.
It is known statistically that auto-immune syndromes are sometimes triggered by infections. All these people who popped up on the forum recently with similar symptoms all started for them between 2011-2012, sometimes 2009. it might not be a coincidence.
Speaking of that, coincidentally just previous to this I answered to a man who's had difficulty swallowing and Neuropathy for the past few months I guess
http://www.medhelp.org/posts/Multiple-Sclerosis/I-have-5-O-Bands/show/1757119?personal_page_id=2660542
Some auto-immune syndromes that are triggered by infections are treated successfully with Plasmapheresis. Are you sure there was nothing out of range in your Complete Blood Count, ESR? when did you take the test?
well in any case let me know how it goes if you want and good luck with the Docs!