This PhD thesis aims to analyse the effect of the Metaverse on the experience of people having social anxiety disorder (SAD). It demonstrates how Metaverse may assist patients with social anxiety since they will have environment and avatars to interact, thereby bolstering their self-confidence in these settings and in the real life. The study will employ a robust mixed-methods approach to explore an experimental investigation that tracks the progression of participants’ social anxiety over time. By addressing the gaps in current understanding of the therapeutic applications of virtual reality, this study aims to contribute valuable insights into parameters and principles of human body movements, facial expressions in the Metaverse context, and social presence factors associated with interactive environments.