2 years - jittery feeling, irritable, muscle twitches, head rushes, heart palps - also had cervical disc herniation ... please help!

Blood work needed: I think it's important to get some basic blood test including thyroid and electrolyte evaluation with kidney function. Beyond that you may need monitoring for irregular heart rhythms. Also, a possibility of symptoms being from anxiety should be considered if a comprehensive work up turns up negative. All in all, there is a need for basic testing as above.