Cilj: U ovoj studiji slučaja bit će predstavljen kognitivno-bihevioralni tretman djeteta s dijagnozom selektivnog mutizma, uz naglasak na važnosti multidisciplinarnog pristupa te važnosti uloge roditelja kao koterapeuta u procesu tretmana. Prikaz slučaja: Dječak u dobi od 6 godina i 8 mjeseci dolazi na prvu psihijatrijsku procjenu u Psihijatrijsku bolnicu za djecu i mladež u Zagrebu u pratnji roditelja, a po preporuci pedijatra. Prema navodima roditelja dječak je prije 5 mjeseci prestao komunicirati s vršnjacima, kao i s odraslima izvan obitelji. Dječak ne ide na dječje rođendane niti kod prijatelja na igru te zahtijeva stalnu prisutnost roditelja. Roditelji smatraju kako je okidač za prekid verbalne komunikacije bila hospitalizacija dječaka zbog drugih zdravstvenih problema, zbog čega je neko vrijeme bio odvojen od roditelja. Nakon multidisciplinarne obrade dječak je uključen u kontinuirani tretman psihologa i logopeda. Psihološki tretman odvijao se kroz godinu i pol dana, u ukupnom trajanju od 28 susreta, a dječak je za to vrijeme napredovao od toga da može razgovarati isključivo s bliskim članovima obitelji, do toga da može komunicirati s raznim ljudima izvan obiteljskog okruženja te bez teškoća funkcionirati u školi. Zaključak: Ovaj prikaz slučaja ukazuje na efikasnost kognitivno-bihevioralne terapije u tretmanu anksioznih poremećaja, što je u skladu s relevantnim znanstvenim istraživanjima. Pritom je stavljen naglasak na važnost multidisciplinarnog pristupa u interakciji između terapeuta, roditelja, škole te ostalih važnih sudionika u djetetovu okruženju. Aim: In this case study, a cognitive behavioral treatment of child with a selective mutism diagnosis will be presented, highlighting the importance of multidisciplinary approach and importance of parents being co-therapists during the treatment. Case report: A boy, 6 years and 8 months old, was brought by his parents to his first psychiatric examination to the Psychiatric hospital for Children and Adolescents in Zagreb, to which he was referred by his physician. According to his parents, 5 months ago he stopped communicating verbally with his peers and adults outside of family setting. The boy doesn’t attend children’s birthdays, nor does he go to his friend’s houses to play, demanding parent’s presence all day long. Parents believe that the problem was triggered by the boy’s hospitalization and separation from parents, due to his medical issues. After the multidisciplinary examination the boy was included in continuous treatment of both psychologist and speech therapist. Psychological treatment lasted for 1,5 year and included 28 sessions in total. During the treatment, the boy improved from being able to speak only with close family members to being able to communicate openly with other people in public setting, e.g. at school. Conclusion: This study indicates efficiency of cognitive behavioral therapy in treating anxiety disorders, which is accordant to relevant scientific research. This case study places importance on the multidisciplinary approach in interaction between therapist, parents, school and all other relevant participants in the child’s social environment.