The egg is one of the most common food allergens, and immunologic reactivity to egg antigens may be an early marker of atopic disorders. Budesonide is a synthetic non-halogenated corticosteroid with 16a, 17a-butylidene dioxy portion, and it is one of the common causes of corticosteroid allergy together with tixocortol pivalate and hydrocortisone butyrate. The patient was a 12 year old female. She had developed atopic dermatitis mainly on the face since she was 1 year old. She applied budesonide cream for treating atopic dermatitis in our dermatologic clinic, but her facial lesion was aggravated. On past medical history, she had been suffered from an egg allergy since l-year-old, and she was accidentally exposed to egg and developed large pruritic erythematous patch on entire body. This case could be considered as atopic dermatitis with egg and budesonide hypersensitivity on the basis of the clinical features and prick test, MAST, open food challenge and patch test.