I have been thinking about my response to Becky's questions and realized I had not answered them completely. I had not included under 'chemicals previously exposed to' the (to me) unkown chemicals involved in anaesthesia. At ages 5 and 12, ether was used for surgeries. Delivering my first two babies, it was 'spinal block'; for the third and fourth babies it was some kind of gas; fifth baby it was an 'epidural'. For various surgeries, I was given a 'general anaesthetic'. I hope these additional data are useful to you, Becky. Thank you for your interest in Parkinson's. Barb =========================================================================== Barbara Patterson [log in to unmask] HSC 2J22 905-525-9140, ext. 22403 School of Nursing ===========================================================================