I HAVE A FRIEND WHO STARTED HAVING PROBLEMS ABOUT 2

i HAVE A FRIEND WHO STARTED HAVING PROBLEMS ABOUT 2 MONTHS AGO. HE STARTED SLURRING HIS WORDS AND WOULD ALMOST HAVE MEMORY LOSS. THE LAST 3 WEEKS HE HAS HAD LEG WEAKNESS NOW HIS LEGS WILL JUST LOSE ALL FEELING. THEN ALL AT ONCE HE'S OK. HE HAS BEEN TO THE HOSPITAL TWICE THEY CHECKED FOR STROKE, HEART ATTACK AND HAVE DONE A BLOOD PANEL WORKUP. I AM WONDERING ABOUT MS, IS THAT A POSSIBILITY? HE IS 50 YEARS OLD