Rachel Simon, third-year pediatric resident at Nemours/Alfred I. duPont Hospital for Children, also contributed to this article. Teens’ use of TikTok, the social media app that allows users to watch, create, and share 15- to 30-second videos recorded on cellphones, has escalated during the pandemic. TikTok is now the second most popular downloaded app, after only Instagram. If you ask teenagers what they like to do online, chances are it’s TikTok. Almost half of TikTok users are between ages 16 and 24, and 90% of users engage with the app every day. The content varies widely and ranges from music, dance, exercise, and tutorial videos to humor and parodies. TikTok can get people moving, educated, and laughing. “It’s all good!” however, does not apply to all of TikTok. Here are just a few of TikTok’s dangerous “challenges”: “The Benadryl Challenge” involves individuals taking high doses of diphenhydramine, an over-the-counter allergy […]