Researchers have not been able to determine any kind of pattern as to who is more prone to develop the disease with the exception of military veterans. Veterans are twice as likely to develop the disease. Desert Storm and Gulf War veterans are four times as likely as the normal veteran to develop the disease.
Interesting a friend in Port Lavaca has something similar just recently diagnosed. Wonder if there is any common denominator to this illness in relation to proximity of where they live and/or work, etc.