Subcutaneous emphysema after vigorous sneezing in the setting of acute frontal sinusitis.

INTRODUCTION: Subcutaneous emphysema [SCE] can develop due to traumatic, infectious, and spontaneous causes and usually localizes to the periorbital space.

CASE: We present a case of an 18-year-old male with an 8-day history of migraine-like headaches followed by the acute onset of frontofacial swelling after vigorous sneezing. Radiologic and physical exam findings supported a diagnosis of frontofacial SCE in the setting of frontal sinusitis.

DISCUSSION: A sneeze, although usually benign, causes a significant increase in intranasal pressure. When coupled with a history significant for facial trauma or rhinosinusitis, this rise in pressure can be sufficient to cause fracturing of the bone overlying a paranasal sinus, leading to the formation of SCE.