significant weakness on left side, head/eyes twitching

IN MAY 2011 I HAD A 'FUNNY' TURN. MY FACE WENT NUMB, MY LEGS wouldnt WORK AND I WAS INCOHERENT FOR A SHORT TIME. AFTER A FEW DAYS MY LEFT ARM STARTED TO SHAKE REALLY BAD, THIS LASTED FOR OVER 4 HOURS. SINCE THEN I HAD AN INCIDENT WHERE I WENT FOR A WALK AND GOT disorientated AND couldnt GET HOME. I WAS WALKING AS tho I WERE DRUNK (I havent HAD A DRINK IN OVER 4 YEARS...AND dont DO DRUGS OR SMOKE). I WAS STAGGERING FROM ONE SIDE OF THE ROAD TO ANOTHER, MY LEFT FOOT(TOE) SCRAPES ALONG THE FLOOR, AND I occassionally HAVE A FEELING LIKE PINS AND NEEDLES IN MY LEFT LEG AND FOOT.
I SEEM TO BE WORSE WHEN TEMPERATURES CHANGE, BUT I CANNOT STAND THE HEAT OR EXCESSIVE COLD TEMPERATURES....I SEEM TO HAVE SYMPTOMS WORSE WITH HEAT CHANGES.
MY LEFT HAND FORMS A KIND OF CLAW, MY RIGHT HAND HAS STARTED TO DO THE SAME NOW TOO.
I HAD AN mri SCAN WHICH HAD 3 WHITE SPOTS BUT I WAS TOLD THIS WAS NORMAL.
I GET VERY TIRED.
I USED TO RIDE MY BIKE FOR MILES...THOUGHT NOTHING OF DOING 50 MILES....BUT I HAVENT BEEN ABLE TO DO THIS SINCE LAST MAY AS IT WOULDNT BE SAFE
IF ANYONE HAS ANY IDEAS I WOULD BE MOST GRATEFUL TO HEAR FROM YOU
MANY THANKS