Erysipelas is a superficial edematous dermatitis. It is most commonly caused by β-hemolytic streptococci. Recently, it has become a rare disease because of the development of antibacterial agents. A case of facial erysipelas caused by odontogenic infection was presented. The patient visited our hospital with the chief complaint of flare and swelling of the right cheek. She felt weary, because her body temperature was 37.3°C. As intraoral findings, the maxillary right first premolar tooth had percussion pain and flare of the peripheral gum. It was treated by intravenous antibiotic therapy for three days, followed by antibiotics given orally for two months. After about one month, the facial erysipelas disappeared completely. The progress has remained good for six months after the medical therapy.
