Three years ago I had an onset of extreme fatigue and extreme shortness of breathe. I was hospitalized for six days and after all test came back normal but was treated with IVIG the closest diagnoses they came up with was guillian barre. This happen again in Nov. But left the hospital with no answers and said I really didn't have guillian barre. After seeing numerous doctors and specialists I was told I had hyperventilation syndrome and thats what I had three years ago too. After pondering on this they said all of my symptoms was due to a lack of carbon dioxide however three years I was on oxygen. They were trying to diagnosis me with myasthenia gravis but not enough proof to do so. Could any other diagnosis be close to either one of those things that I could get someone to check me for?