1. Early predictors of mortality in parkinsonism and Parkinson's disease: a population-based study 2. [What's Trending]: Data from the Largest Natural History Study of Stiff Person Syndrome. In the first segment, Dr. Jeffery Ratliff talks with Dr. David Bäckström about his paper on Early predictors of mortality in parkinsonism and Parkinson's disease. In the second part of the podcast, Dr. Jeffery Ratliff focuses his interview with Marinos Dalakas on Stiff Person Syndrome. DISCLOSURES:Dr. Jeff Ratliff has received speaker honoraria from Teva and US WorldMeds LLC; is the deputy editor for the Neurology Podcast; has been a consultant for UCB Pharmaceuticals, US WorldMeds LLC, Medscape, and Retrophin Inc; and has served on speakers' bureaus for Teva and US WorldMeds LLC. Dr. David C Bäckström holds patents for chemical compounds that may be developed as treatments for premenstrual dysphoric disorder, but has not received any personal compensation for the patents. Dr. David C Bäckström has received Research Support from Swedish Medical Research Council, grant number (K2013- 62X-15224-10-4) and unrestricted grant for Parkinson's disease research and has received foundation and societies research support from Erling Persson Foundation, Umeå University, Västerbotten County Council, King Gustaf V and Queen Victoria Freemason Foundation, Swedish Parkinson Foundation, Kempe Foundation, and Swedish Parkinson's Disease Association. Dr. Marinos Dalakas serves the CIDP steering committee for Novartis and on DSMB for Baxalta and Octapharma, has received funding or served as a travel speaker honoraria for Merck/Serono, OCTAPHARMA, PFIZER AG. Dr. Marinos Dalakas has served on editorial board including Neurology, editorial board (5 years, not compensated), BMC Neurology (Section Editor, 5 years not compensated), Acta Myologica, editorial board (5 years, not compensated), Acta Neurologica Scandinavica editorial board (5 years, not compensated), and Therapeutic Advances in Neurology (Associate Editor; 4 years, compensated). Dr. Marinos Dalakas consultancies include work with Therapath, Baxter, Octapharma, CSL, Dysimmune Diseases Foundation and he has received research and institutional support from Thomas Jefferson University Neurology department or to Neuroimmunology Unit, University of Athens Medical School for research and education from: Merck-Serono, Genzyme, Novartis, Guillain-Barre/CIDP Foundation, Dysimmune diseases Foundation, CSL, Biogen and Newfactor.