For more than two years, the Pentagon delayed screening troops returning from Iraq for mild brain injuries because officials feared veterans would blame vague ailments on the little-understood wound caused by exposure to bomb blasts, says the military's director of medical assessments.
Air Force Col. Kenneth Cox said in an interview that the Pentagon wanted to avoid another controversy such as the so-called Gulf War syndrome. About 10,000 veterans blamed medical conditions from cancer to eczema on their service.

http://abcnews.go.com/Health/story?id=4473511&page=1