I am 38yrs old boy. From the last six years I am suffering from chronic pain and weakness in both the lower legs. This problem started from the left leg first and gradually developed in both the legs. The pain gets worse in a few minutes of standing. actually I feel that some poisonous type of thing is spreading over there. sometimes it develops in other parts of the body too specially hands and shoulders. The whole day and night too is disturbed. Please help.