The Parkinsonism reported on Guam is a very peculiar type which is characterized by both Parkinson's *and* symptoms of amyotrophic lateral sclerosis (Lou Gehrig's disease). It seems to occur only among people of Chamorro ancestry (the indigenous people of Guam and elsewhere in the Marianas Islands) and from what I remember (and it has been a long time), it is genetic. Most people feel that is is totally different from the kind of PD that we deal with on this List. Best, Bob *********************************** ROBERT A. FINK, M. D., F.A.C.S. Neurological Surgery 2500 Milvia Street Suite 222 Berkeley, CA 94704-2636 USA Phone: (510) 849-2555 FAX: (510) 849-2557 WWW: <http://www.dovecom.com/rafink/> mailto:[log in to unmask] "Ex Tristitia Virtus" ***********************************