33yr female. Sudden onset of achy bones, pins&needles in arms/hands. Forgetfulness, 1 eye twitching, complete exhaustion. Happens every 5 months or so.?

Aches, foregetful. twitches, exhausted. All of this suggests the need for you to see your doctor. Tell him/her everything. The doc will examine you and MAY refer you to a neurologist for appropriate tests. Please follow through and you will likely find your answer. Peace and good health.