Non-motor symptoms are common and have a significant impact on the quality of life in Parkinson’s disease (PD) patients. Thai Parkinsons Disease - Movement Disorders Society (Thai PDMDS) and Faculty of Medicine, Thammasat University provide a screening questionnaire application named "Thai-NMSQ" for assessing and evaluating non-motor symptoms in Thai Parkinson’s disease patients. This application is available for everyone, free of charge