This is a condition in which an individual has blockage of the spinal fluid that drains from the brain. This can be potentially dangerous and must be evaluated and treated appropriately. Many individuals notice severe headache pain, blurriness of vision, double vision, nausea, loss of consciousness. Chiropractic Neurology is not a treatment for this condition, but may be helpful in recognizing the condition if not appropriately diagnosed at an earlier time. Often, tumor or cysts are the main causes and surgery is usually warranted to remove the pathological tissue.