congratulations, dennis! your pd speakers guide is a marvel it is deceptively simple and amazingly thorough two comments: 1. 'speakers guide' may be too restrictive a title [!] despite reflecting the guide's initial purpose 2. somewhere, recently, i.e. in the past three months, [i'll find it!] i read a pubmed study that described pd as having four major symptoms/indications i.e. the three you mention plus number four: "poor sense of balance" this "fourth" symptom was news to me i had only ever heard of "the big three" until then in fact there may be some long term relevance for me i've always had a poor sense of balance i.e. bicycle riding, ice skating, roller skating, etc thank you for all that good work with your permission i will distribute copies of it whenever and wherever the opportunity presents itself your cyber-sis janet janet paterson 50-9 / sinemet-selegiline-prozac almonte-ontario-canada / [log in to unmask]