Thank you! I will definitely mention this to her. She is 37 now but this has been going on for about 8 years now. It is really frustrating. She has 4 children and her 13 year old daughter called the ambulance this last time. The kids are getting used to it and that is not fair to them either.
I recently posted to a forum user about Wolfe-Parkinson-White Syndrome. If she is in her late teen years, it might be worth checking out. We had so many issues with our daughter. Then, the doctors' appt. would have 0 results. We used to leave feeling cheated emotionally, physically and financially.
One day after she graduated, she was right in front of her college and passed out behind the wheel. Finally, it took an ER doctor to diagnose her condition. It is an electrical condition with the heart. This may or may not be the case with your daughter. You have not listed many symptoms.
But, these were two symptoms my daughter had from about 9th grade to 19 years old. (her car wreck was when we found out) Surprising enough, you can still get a driver's license with this condition. Many parts of the U.K. (possibly all) won't even let you obtain a driver's liscense. The doctor also said, because of technology this condition is still a new world of research to the medical community. Although it was coined several years ago, they didn't have all of the high technology, resetting electrical nodes in the heart, etc. that they have today.