Dear patient. Greetings from health care magic!!! I am Dr Thakker and shall be answering your question. I can understand your concerns about the acute onset deafness and tinnitus. I will try my best to answer your question and guide you through it. You have acute onset left ear hearing loss and tinnitus. We need to consider the following causes: 1) Meniere s disease: this is usually accompanied by vertigo. Treated with betahistine and then surgery. 2) CVA: a stroke involving the firbres of the ear sensory system can cause this. (rare cause) 3) Acoustic neuroma: This is a tumor of the 8th nerve which leads to unilateral deafness and tinnitus. 4) Traumatic: trauma to the hearing apparatus of the inner ear can cause loss of hearing and tinnitus. We need to know a more detailed history of your symptom, associated fever or trauma. We can do a MRI brain with CT of the temporal bone to know the exact pathology. Auditory tests will help us quantify the amount of deafness. I hope this helps you out. If you have any more questions, please do not hesitate to write back to me. Yours sincerely, Dr Thakker.