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Idiopathic intracranial hypertension (IIH) is a disorder that commonly occurs in obese youngwomen of childbearing age and is characterized by symptoms such as pulsatile tinnitus, dizziness,headache, nausea, vomiting, and visual loss without any structural or vascular abnormalitiesin the intracranial cavity. We recently experienced a case of a 33-year-old obese woman whopresented with right-sided pulsatile tinnitus, which is an early symptom for IIH. The patient wassuccessfully treated with weight reduction and carbonic anhydrase inhibitor (acetazolamide). Pulsatile tinnitus requires thorough diagnosis and examination because it can be cured if the anatomicalor functional cause is identified and treated. When obese women of childbearing agepresent with pulsatile tinnitus at the otorhinolaryngology outpatient department, treatment forIIH should be initiated after appropriate examination and diagnosis as pulsatile tinnitus may bethe only symptom for IIH.