Dry facts are not always inviting: a content analysis of Korean videos regarding Parkinson’s disease on YouTube

•We assessed the accuracy of Korean videos about PD on YouTube and viewers’ responses to them.•Only two-thirds of the Korean videos regarding PD provided reliable information.•The videos with reliable contents were less popular than videos with misleading contents. This study aimed to evaluate the accuracy of Korean videos regarding Parkinson’s disease (PD) on YouTube and viewers’ responses to them. YouTube search was performed using the search term “Parkinson disease” in Korean language on March 28, 2017. Two independent neurologists categorized the videos into “reliable”, “misleading” or “patient experiences”. The number of views, days since upload, video length, number of “likes” and “dislikes”, and upload source were collected for each video. A total of 138 videos were included in this study. Of these, 91 videos (65.9%) were reliable; 31 (22.5%) were misleading, and 16 (11.6%) were of patient experiences. The videos with patient experiences had the highest number of mean views with 9710.4±3686.9, followed by misleading videos with 5075.0±1198.6, and reliable videos with 2146.8±353.4 (ANOVA, p