I lose feeling in my one leg all the time n it will not support my weight because it has gone paralyzed. Can last a few hours to half the day.

They dont know the cause but it is suspected that I've got a nerve trapped in my spine that moves from time to time rhat rhey cant see on the scans as yet.

I get something likenthis from time to time in my left leg. I lose complete use of my leg, I mean to the point that it is like someone cut my leg off. But mine will happen for anywhere from the day to not having use of it for months.
With mine it thurned out to be a pinched nerve in my hip, and if I am on my feet to long it will happen. I have seen me be on my feet for 4-6 hours and everything be fine, but then the next day be on them for 20 mins for a shower and lose all use of it.
I would talk to the dr about it if it happens again.

My calf's feel like the give out too esp going up stairs very hard for me

Hi I am sorry to hear you had such problems getting out of the shower .omg I always have this fear about my muscles just giving in it's so scary .my best advise to you is go and see your Dr immediately and he will tell you what is best for you ..

Not eating good can make you weak but I don't think it would cause your legs not to work. Maybe try.taking some supplements to get the nutrition your not getting. I take several but maybe try a multi vitamin and calcium to strengthen your.bones and magnesium will help the muscles. I would let your doctor known what happened and see what they think. Please let us know what you find out. Hugs