What Does Pain And Sensation Of Needles And Pins In Legs Indicate?

I have a concern of an ongoing pain in both legs, above the knee in the thigh area, first Symptoms: on left leg thigh of a sensation of something crawling on the surface of skin of and on, second symptom; burning on both legs of the thigh with mild pain, relived by setting down. The third; light sensation of needles and pins in both legs and feet and also of the right arm and hand. I have seen Local family Dr.
and had MRI. family Dr. said not slip dick. What do I need to be concerned of?