Sadiebessie,
I have not experienced those symptoms. It is quite a collection, none of which (from your description) seem Parkinson's-like. Perhaps you have other Parkinson's symptoms, but were most concerned with the symptoms you mentioned.
That's definitely an odd lot. I am glad you are seeing - or by now you already saw her/him - a movement disorder specialist (MDS). Has anything changed in the last 3-8 weeks? Meds? Sleeping patterns? Diet? Physical activity? Stressors? Anything you might be exposed to now that you weren't before? You might consider keeping a diary of unusual things - like when you see the flashes of light ... what are you doing at the time, did you just wake up, does it occur only when lighting is poor or bright, ... etc. Maybe you will see a pattern of some kind. These are all rhetorical questions - just something to think about and no reply necessary.
Best of luck!
lizzy4451