My husband used to feel worse in the morning, better at night. Had a hard time getting out of bed.
One thought might be that by lying down flat at night while you sleep, circulation is not as good. Being upright lends itself to better circulation, due to gravity and motion. just a thought- (if interested you could look into inclined bed or CCSVI)
Husband dx RRMS 3/07
dx dual jugular vein stenosis (CCSVI) 4/09