Kara, Nada Abstract: This case study examines the speech and language development of MS, a 6;9-year-old boy presenting with consistent deviant phonological disorder, particularly affecting fricatives, affricates, and approximants. MS’s early medical history of recurrent otitis media and delayed speech milestones contributed to his phonological impairments. Phonological contrast therapy targeting /f/, /s/, and /ʃ/ was