BACKGROUND: Auricular hematomas are well-known among wrestlers and other contact sports participants, but spontaneous auricular hematomas are rare. The differential diagnosis for acute spontaneous auricular swelling is limited. In addition to infectious causes, antecedent trauma, and bleeding complications, angioedema should also be considered. Although rare, acute non-traumatic auricular hematomas need urgent surgical intervention if they are large.

CASE REPORT: A 37-year-old male presented to the Emergency Department (ED) with the complaint of acute pain and swelling to his left ear 30 minutes prior to arrival. He denied any recent or preceding trauma, insect bites, or allergies. He denied any anticoagulant use. Initial treatment was for possible allergic reaction, but an expanding hematoma was subsequently noted. This was incised and drained.

CONCLUSIONS: We report a rare case of spontaneous auricular hematoma. By highlighting the clinical features and treatments, the provider can be more alert to recognize and promptly treat this clinical entity.

Keywords: Ear Cartilage, Ear Deformities, Acquired, Hematoma, Otolaryngology, Ear Diseases