Greg from the Wiggles childrens show becoming chronically ill and having to leave the group for the most part. They didnt mention any official diagnosis. One article mentioned this. I have ALL these symptoms....but i have Lyme/CFS . Sound kinda familiar? Here is what was stated in the article... Orthostatic Intolerance Symptoms In addition to the symptoms Page is experiencing, the low blood pressure from orthostatic intolerance leads to the following symptoms: Dizziness Blurry vision Fainting Fatigue Inability to exercise Nausea Headache Difficulty breathing While the exact cause is somewhat mysterious, it's linked to a problem with the part of the nervous system that controls body functions we don't normally have to think about, such as breathing, heart pumping, and body temperature. *The cause of Greg Page's orthostatic intolerance is unknown at this point.