A case of idiopathic anaphylaxis / 알레르기

ABSTRACT

Idiopathic anaphylaxis is a life-threatening systemic reaction of unknown cause. The pathophysiology has not been established, although it has been postulated that the clinical manifestations of idiopathic anaphylaxis may result from the chemical mediators released by mast cells or basophils. The diagnosis of idiopathic anaphylaxis is made after an appropriate allergic evaluation and exclusion of provocative triggers. We report an unusual case of idiopathic anaphylaxis manifesting with periodically repeated urticaria, angioedema, dyspnea, and hypotension. His symptoms were not related to known causes of anaphylaxis such as foods, drugs, insect stings, or exercise. Other diseases simulating anaphylaxis were excluded by careful history, physical examination, and relevant diagnostic tests. High dose prednisolone, hydroxyzine, salbutamol, ketotifen, and methotrexate were prescribed to prevent recurrent episodes, but the symptoms relapsed 5 months after cessation of the treatment.