Since a week I'm experiencing weakness in legs and hands. I can sense the weakness if I stand continuously for sometime. I feel my hands are relatively weak than normal. Along with this, I'm also experiencing mild dizziness feeling sometimes. I feel like tired if I continuously talk for longer time. After some continuous work I feel sleepy, mild fatigued and exhaustion. After having food or liquids I feel better. Please suggest me what could the problem be. My pulse rate, BP and Sugar levels are normal. I have an important function in 3-4 days. Seeing this condition, I feel worrisome. Please advice what care to be taken...