I went to am Ear, Nose and Throat doctor who performed my CSF leak surgery yesterday. He said that my condition is rare but in the last six weeks he has seen four people with a CSF leak. That is alarming to me. They need to compare everything to see what the correlation is between the five of us. Is it pain medications, artificial sweeteners, etc.? I want to know so I can stop whatever it is that caused this leakage.