This patient is a 34-year-old female who visited the hospital on 2023.07.14 with a complaint of decreased hearing on the right side that started 10 days prior to the hospital visit, with no significant medical history. The patient reported that sounds in the right ear are perceived to be about 50% softer than usual. Additionally, she mentioned experiencing tinnitus resembling the sound of wind and a feeling of fullness in the ear. The patient also complained of brief episodes of mild dizziness. Audiometric testing conducted at our clinic revealed a diagnosis of sudden sensorineural hearing loss on the right side with results of 48/38 92 and 5/4 100. Vestibular function testing showed mild left nystagmus during the Posterior Head Shaking Test, Dix-Hallpike Test, and Supine Head Roll Test. Following the Fisher regimen, oral steroids were prescribed, and steroid injections were administered into the right inner ear four times over a period of two weeks. To rule out hearing loss due to lesions within the brain, a Brain MRI was performed, and the results indicated no significant abnormalities. The patient, undergoing treatment for sudden sensorineural hearing loss in the right ear, experienced the onset of low-frequency hearing loss in the left ear during the course of therapy. Subsequent monitoring indicated that the sudden sensorineural hearing loss in the right ear was being maintained without significant improvement, while the low- frequency hearing loss in the left ear recurred after an initial improvement. Therefore, our plan is to conduct a follow-up audiometric test three months later. If there is no improvement in hearing, we will recommend hearing aid usage for the right-sided sudden sensorineural hearing loss.