pseudotumor cerebri
"I was 19 when I was sent from my small town & county to have tests done. I'd had symptoms from age 12 when I was put on birth control pills for PCOS. The Dr from San Francisco put me on Diamox and prednisone and ordered my family Dr do a spinal tap when I had eye problems or severe headaches (he did at least 3/wk for 2yrs). My family Dr took me off the prednisone after a few months and I gained over 100lbs. The Diamox caused me weird side effects. My face was all "tingling", everything I ate or drank tasted metallic (especially if it was fruit or carbonated). Eventually the tingling started down my neck, chest, and hands/arms. So my Dr took me off it, gave me hydroclorathazide (it maybe misspelt). I've learned Diamox causes it a lot."