Maryhelen - I would like to hear more about your experience at Mayo Clinic. What kind of tests did they run for myoclonus? Is it possible that other medical clinics might have the tests available? Would the traditional electro-gram(not sure about that name) that they use to diagnose epilepsy do it? Does the fact that you have been diagnosed with myoclonus mean you don't have PD? Also, how does your tremor differ from other PWP tremor? Thank you for your most informative letter. Am eager to learn more. Joan Dykstra