Hi, my husband came down with mengentis in 1995 and again 6 months later. The doctors determined he had a spinal fluid leak when he began leaking fluid out of his nose. The test they did to find it was they injected dye into his head and then put him on a tilt table upside down and the dye went straight to the leak. He then had brain surgery to fix his skull which caused the tear in his dura. He suffered from headaches for a year after but that was due to the meningitis. I'm not sure what the name of the test is but you might mention this procedure to your doctor. I hope the leak is found soon and you get some relief. I know how terrible it is. Take care. Yvonne