Introduction andObjective. The fear of missing-out (FoMO) is a psychological phenomena among social media users related to anxiety that they can miss something important. With an increasing number of users of social network sites and Internet access, adolescents are especially exposed to the negative effects of modern technology. Thus, a proper understanding of new dangers is needed to provide better care for adolescents. The aim of this review was to gather knowledge in the area of fear of missing-out to provide an understanding of this phenomena. The search for relevant papers was performed among the following databases: PubMed, Web of Science, Scopus and EBSCO. Brief description of the state of knowledge. The FoMO phenomenon is related to habits, mental health issues as well as society-related problems. Results indicate that FoMO is connected to feelings of loneliness, depression, anxiety, and the need to belong. Some studies indicate that there is a connection between FoMO severity and relationships with parents. Similarly, there is evidence of a connection between FoMO and problematic technology use. Summary. Seeking support from friends, family, or a mental health professional can offer perspective and coping strategies for managing FoMO-related distress. By adopting a pro-active approach and implementing these strategies, individuals can gradually diminish the impact of FoMO on their overall wellbeing. Raising public awareness is necessary to alleviate the deficits of psychological needs of adolescents