I am a 26 year old male, who has also been experiencing strange things. My symptoms are: burning and pins and needles in my feet, strange muscle vibrations/jolts, electrical zaps or shocks in random locations on my body, strange crawling sensations etc. They did an MRI to check for MS, it was negative. They sent me to a neurologist and all test came back normal.. They have took numerous amounts of blood test which all come back normal. I too have drank amounts of caffeine that I shouldn't and have been trying convert fully to water(it's hard to kick that habit). I abused alcohol for the first few years I was in college but quit as soon as my symptoms started. I also take a generic 1 a day men's vitamin, and Fish Oil with Omega 3.
I certainly feel your concern and worry, it's scary wondering if your even going to be able to pursue a job in what your going to college for when all this has started up. Please let me know if you find out any answers in your situation as it may give me a direction to try and resolve mine.