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I.はじめに
耳下腺の手術後,または外傷後,ある期間をおいて食事摂取時に耳下腺領域の皮膚発汗,発熱,熱感などの症状が時として発現することは,すでに19世期中葉より知られていたところである1)。
1923年フランスの神経科医Lucie Frey2)女史がLe syndrome du nerf auriculotemporalとして発表して以来,この症候群は一般にFrey症候群と呼ばれている。他にBaillarger's syndrome1),Dupy's syndrome3)Frey-Baillarger's syndrome,auriculotemporal and chorda tympani syndrome,unilateral flush sweat,localized facial gustatory vasosudomotor reflex,gustatory sweating,salivo-sudipar syndrome,gustatory sweating and flushing syndrome(GSF)等々の名で呼ばれている。Laage-Hellmann4)が提唱するようにgustatory flushing syndrome(GSF)は本症候群の症状を簡潔に表現しており,適当と思われるが,やはり親しみあるFrey症候群という呼び名もすて切れない。
Frey症候群の報告は諸外国においてはさほど稀ではないが本邦では著者の知る限りでは意外に少なく北村ら5),中村6)の報告を見るにすぎず,全例が耳下腺手術後の合併症である。
今回,私たちは頭部顔面外傷後に典型的なFrey症候群を来たした1例を経験したので,診断法,治療法,病因などについて若干の考察を加え報告したい。
Frey's syndrome which consists of gustatory sweating and flushing after meal is a well known phenomenon due mostly to unskillful parotidectomy. The authors report a case of post traumatic manifestation of Frey's syndrome appearing in the left auriculotemporal region.
Four years ago the patient was severely injured by an automobile accident with a blow on the auriculotemporal region and lost consciousness. The patient was diagnosed and treated as cerebral commotion and fracture of the left clavicle and the mandible. Since last year the patient has noted hearing impairment and tinnitus of the left ear and flushing sensation and sweating in the auriculotemporal region.
The functional test of the salivary glands revealed hypofunction of the left parotid gland. A Minor's colorimetric method was performed to demonstrate the sweating after meal in the auriculotemporal region. The diagnosis of Frey's syndrome was made.
The pathogenisis of Frey syndrome is belived to he due to misdirected regeneration of parasympathetic nerve fibers from the parotid gland growing into the sweat glands.
The therapy for this disease and the tympanic nerve block was also discussed.
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