Along with weak legs and numb fingers with pain on index ones, now when i rub my upper arms it makes my index fingers hurt badly until i stop.why?

Get checked!: There are multiple potential causes, i would get checked as soon as possible. One potential cause is a condition known as cervical myelopathy. In this condition there is severe spinal cord compression, usually by a disc herniation or bone spur. Patients develop numbness in the arms and legs and can lead to paralysis. Please be seen.