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Featured researches published by In Su Ahn.


Annals of Dermatology | 2009

Wheat-dependent, Exercise-induced Anaphylaxis: A Successful Case of Prevention with Ketotifen.

Ji Hoon Choi; Hee Bong Lee; In Su Ahn; Chun Wook Park; Cheol Heon Lee

Food-dependent, exercise-induced anaphylaxis (FDEIA) is the triggering of anaphylaxis after ingestion of certain foods when followed by physical exercise. Symptoms vary from the typical generalized urticaria to severe allergic reactions. We report the case of a 20-year-old woman who had a 7-year history of recurrent wheals and dyspnea after ingesting several kinds of food (wheat, pork, and beef) along with physical exercise. Based on a provocation test, she was diagnosed with wheat-dependent, exercise-induced anaphylaxis. She was instructed to take 2 mg of ketotifen 2 hours before ingestion of wheat to prevent the symptoms, and subsequently the provocation test did not elicit wheals. We therefore prescribed ketotifen (1 mg twice a day). She has not had recurrent wheals or dyspnea for 6 months. We herein report an interesting case of wheat-dependent, exercise-induced anaphylaxis with successful prevention by ketotifen.


Annals of Dermatology | 2009

A Case of Churg-Strauss Syndrome

Ji Hoon Choi; In Su Ahn; Hee Bong Lee; Chun Wook Park; Cheol Heon Lee; Hye Kunng Ahn

Churg-Strauss syndrome (CSS) or allergic granulomatosis angiitis is a rare primary vasculitic disease. CSS can be diagnosed by the presence of any four or more of the six criteria, which include asthma, eosinophilia greater than 10%, paranasal sinusitis, pulmonary infiltration, histological proof of vasculitis and mono- or poly-neuropathy. We report here on a 45-year-old male who developed erythematous macules, papules and hemorrhagic vesicles on both right extremities along with a tingling sensation and sacral pain. He has been suffering from recurrent allergic rhinitis and bronchial asthma for 6 months. The laboratory findings showed severe eosinophilia (22.3%), hyper-IgE and positivity for p-ANCA. On the histological examination of the hemorrhagic vesicle on the right lower leg, leukocytoclsatic vasulitis and many neutrophils and eosinophils around the cutaneous vessels were observed in the dermis.


Annals of Dermatology | 2009

A Case of Wheat-Dependent Exercise-Induced Anaphylaxis

Hee Bong Lee; In Su Ahn; Ji Hoon Choi; Chun Wook Park; Cheol Heon Lee

Foods are recognized as a common cause of urticaria; however, the role of food is considered to be more important in acute not chronic urticaria. Wheat is a basic ingredient found in many common foods. Food allergy to wheat is primarily described in children in the form of atopic dermatitis. It is rare in adults; where it is mainly reported in exercise-induced anaphylaxis. We report a case of wheat dependent exercise-induced anaphylaxis that occurred in a 54-year-old Korean woman.


Annals of Dermatology | 2011

A Case of a Subepidermal Calcified Nodule on the Sole without Trauma.

In Su Ahn; Bo Young Chung; Hee Bong Lee; Hye One Kim; Hye Kyoung Ahn; Chun Wook Park; Cheol Heon Lee

Subepidermal calcified nodule is an uncommon form of calcinosis cutis, which most commonly occurs in children. It usually presents as an asymptomatic, solitary verrucous nodule on the head and neck region, but occasionally as multiple lesions. Serum calcium and phosphorus levels are usually normal. Histopathology shows well-formed homogeneous eosinophilic material and granules in the upper dermis. Material in the dermis stained with von Kossa was positive. We report on an unusual case of a subepidermal calcified nodule occurring on the sole. A 21-month-old male presented with an oval-shaped, whitish, hard nodule measuring 5×5 mm on the left sole, without any previous history of trauma.


Journal of Clinical Dermatology | 2011

Quality of Life in Children and Adolescents with Atopic Dermatitis

Soo Ick Cho; Jin Hye Kim; Bo Young Chung; In Su Ahn; Hye One Kim; Chun Wook Park; Cheol Heon Lee


Journal of Clinical Dermatology | 2011

Two Cases of Eccrine Poroma on the Scalp

Bo Young Chung; Soo Ick Cho; In Su Ahn; Hye One Kim; Chun Wook Park; Cheol Heon Lee


프로그램북(구 초록집) | 2011

Analysis of major allergens from American and German cockroach by SDS-PAGE and Western blot technique in Korean atopy patients

Cheol Heon Lee; Jin Hye Kim; Soo Ick Cho; Bo Young Chung; In Su Ahn; Hye One Kim; Chun Wook Park


프로그램북(구 초록집) | 2011

Two cases of primary anetoderma on the face (초)

Soo Ick Cho; Jin Hye Kim; Bo Young Chung; In Su Ahn; Hye One Kim; Hee Jin Cho; Chun Wook Park; Cheol Heon Lee


Journal of Clinical Dermatology | 2011

Hidroacanthoma simplex after burn injury (초)

Soo Ick Cho; Jin Hye Kim; Bo Young Chung; In Su Ahn; Hye One Kim; Hee Jin Cho; Chun Wook Park; Cheol Heon Lee


Journal of Clinical Dermatology | 2010

A Case of Cystic Eccrine Spiradenoma on the Left Leg

In Su Ahn; Bo Young Chung; Hee Bong Lee; Ji Hoon Choi; Hye Kyoung Ahn; Hye One Kim; Chun Wook Park; Cheol Heon Lee

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