I have been feeling wierd from last 1 month, From last 1 year i feel i have less muscle on left side of body. But since 1 month, i am feeling my left side body is loose, as if my bones on left side and skin are not sticking to each other, I feel left knee cap is loose, left hand shoulder joint loose , strength wise it is fine. I feel gaseous on left side of stomach and feel cramps. I am afraid. Please help.i have left back pain too. Feel very lil arm pain too. Did spine and brain mri before 6 months, doctor said not to worry. But why am I feeling this since last one month.