Some doctors in the US and other countries say TikTok videos about Tourette syndrome may be contributing to a rise in cases of teen girls with physical tics (Julie Jargon/Wall Street Journal)

Julie Jargon / Wall Street Journal:
Some doctors in the US and other countries say TikTok videos about Tourette syndrome may be contributing to a rise in cases of teen girls with physical tics  —  When teens started turning up in doctors’ offices with sudden, severe physical tics, specialists suspected social media …