Feeling of pins and needles throughout my body. sometimes certain areas on my body feel like a shock of some sort. what is this??

List is long: The list of possible diagnoses for your complaint is very long. One would consider neurologic issues, anxiety, heavy-metal toxicity and other toxicities as well as a host of other conditions. A good medical history and evaluation along with some routine testing would be most beneficial. Please see your doctor.

Often Spine Related: Pins and Needles sensations in the arms/hands, legs/feet can be caused by a disc bulge or herniation in the neck or back. If you get a shocklike sensation (particularly in your torso) when bending your head forward, see your doctor immediately.