Fluctuating Hearing Loss Responding to Corticosteroids: A Case of Cogan’s Syndrome Concomitant with Crohn’s Disease

Hearing loss has a broad differential diagnosis. Hearing impairment responding to corticosteroids is suggestive of an underlying autoimmune cause. We report a rare case of Cogan’s syndrome in a 28-year-old woman with no previous personal medical history. She had experienced two years of fluctuating hearing loss and bilateral keratitis that would respond to high-dose prednisone prescribed by her otorhinolaryngologist. We performed a complete work-up and ruled out most common causes of autoimmune inner ear diseases. Patient was diagnosed with Cogan’s syndrome based on clinical findings and prescribed corticosteroid-sparing immunosuppressive medication. During follow-up, she developed worsening fatigue, new onset anemia, and melena. Endoscopic and pathologic findings were diagnostic of Crohn’s disease. This case emphasizes the high prevalence of concomitant autoimmune diseases.