Alopecia areata and pattern hair loss (androgenetic alopecia) on social media - Current public interest trends and cross-sectional analysis of YouTube and TikTok contents.

AA-related contents on TikTok discussing personal experiences of female subjects were significantly more engaging. DISCERN and DAS scoring showed significantly higher quality and accuracy in videos created by healthcare providers on YouTube, but not TikTok, which could in part be related to YouTube videos being longer. RSV fluctuations corresponding to news in popular culture had high impact. Sponsorship disclosures were generally not reported in product promotional videos.