For the past four years I have had a number of reoccurring symptoms that include, joint pain, headaches, numbness feeling in my face, hands and feet, optic nerve swelling, short term memory loss, just to name a few. I have had a number of test done and they have all come out normal, eeg, nerve test, blood work, mri (last one two years ago brain only), ct, and spinal tap. I am at a loss because no one can seem to know what going on and every time the symptoms come back they are worse. What could be causing this? Any other test I can request to be done?