fa تخصصي Special پژوهشي Research This study was conducted to analyze the lived emotional experience of adolescents during the prevalence of COVID-19 and quarantine. The research method was phenomenological qualitative. To achieve information saturation, 25 adolescents aged 15-17 years were purposefully selected and responded to the research tool which was a semi-structured interview individually and online. After analyzing the six main themes of boredom, loneliness, homesickness, helplessness, stress, anger, and fear of judgment were extracted from the available data. The results of the present study are consistent with empirical evidence showing that although restrictions on quarantine are unavoidable, facilitating conditions to meet mental needs and maintain mental health, such as creating interpersonal relationships and supporting adolescents in critical situations, should be considered by healthcare providers, trainers, and parents. COVID-19, Mental health, Boredom, Helplessness, Stress, Loneliness, Homesickness 233 240 http://hdq.uswr.ac.ir/browse.php?a_code=A-10-455-1&slc_lang=fa&sid=1 Sahar Soufi sahar.soufi1392@gmail.com 0000-0001-5666-869X Yes Department of Psychology, University of Tehran Kish International Campus, Kish, Iran. Fatemeh Rashidipour rashidi.psychologist@yahoo.com No Department of Educational Psychology, Faculty of Education and Psychology, Shahid Beheshti University, Tehran, Iran. Seyedeh Sara Aghaei Sabet aghaeisabet98@iausr.ac.ir‬‏ 0000-0002-9838-7770 No Department of Psychology, Yadegar-e-Imam Khomeini (rah) Shahre Rey Branch, Islamic Azad University, Tehran, Iran.