The causes of unilateral tinnitus with hearing loss may include cerumen impaction, otitis externa, secretory otitis media, and sudden deafness. 1. Cerumen impaction: When cerumen is secreted excessively and not cleared regularly, it accumulates in the ear canal, causing blockage of the external auditory canal, or the cerumen is constantly close to the eardrum, which may eventually lead to tinnitus and hearing loss. 2. Otitis externa: This is an infectious disease. When inflammation occurs in the external auditory canal, it can lead to edema, redness, flaking and other symptoms. With the aggravation of the disease, tinnitus, ear stuffiness, hearing loss and other symptoms. 3. Secretory otitis media: For example, when upper respiratory tract infection occurs, it can involve the eustachian tube, causing its inflammatory reaction, which leads to the accumulation of fluid in the tympanic cavity. This can easily cause tinnitus, hearing loss and other symptoms. 4. Sudden deafness: non-fluctuating sensorineural hearing loss that occurs suddenly for unknown reasons, mostly accompanied by hearing loss and tinnitus. When hearing loss and unilateral tinnitus occur, it is recommended to go to the hospital in time for diagnosis and standardized treatment.