Social media use and related research on psychiatric symptoms continue to increase and evolve rapidly. The potential bidirectional relationships and correlations between social media use and anxiety seem to be understudied. We examine prior research focused on social media use and anxiety disorders, and thus far, correlations have been weak. Nevertheless, these associations may be poorly understood but important. Fear of missing out has been considered a moderator in earlier research. We discuss the limitations of previous research, guidance for clinicians and caregivers, and challenges for future studies in this area.