Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram.

ACKNOWLEDGEMENT I take this opportunity to express my sincere gratitude to Dr. Asha Kishore, Professor of Neurology and Movement Disorders expert, SCTIMST, my guide for the study, for her expert guidance, constant review, kind help and keen interest at each and every step during the completion of the study. Centre for Health Science Studies for helping me with the statistical analysis of this study. I express my heartfelt gratitude to Mr. Gangadhara Sarma, clinical psychologist and social worker, Comprehensive Centre for Movement Diosrders, SCTIMST, for his sincere efforts and constant assistance during the entire course of the study. Last but not the least, I extend my gratitude to all my patients who participated in this study Bowing before the blessings of Almighty…..