BACKGROUND: Atopic dermatitis (AD) is a chronic inflammatory skin disease commonly associated with respiratory allergies such as rhinitis and asthma, and a high serum level of IgE. In contrast to the 'classic' IgE-mediated allergic (extrinsic) form of AD, approximately 20% of the patients are reported to show normal IgE levels, lack of sensitizations towards environmental allergens, and absence of associated respiratory allergies. Accordingly, these patients are assigned to a nonallergic (intrinsic) form of the disease. OBJECTIVES: In order to define these two forms of AD more closely, 259 adult patients with AD were investigated. RESULTS: After a thorough diagnostic workup there were 18 patients (6.9%), who fulfilled the criteria of intrinsic AD. After follow-up, four additional patients had developed respiratory allergies or IgE-mediated sensitizations resulting in an overall proportion for intrinsic AD of 5.4%. CONCLUSIONS: Based on these figures the nature and relevance of the intrinsic form of AD deserves further evaluation.
BACKGROUND:Atopic dermatitis (AD) is a chronic inflammatory skin disease commonly associated with respiratory allergies such as rhinitis and asthma, and a high serum level of IgE. In contrast to the 'classic' IgE-mediated allergic (extrinsic) form of AD, approximately 20% of the patients are reported to show normal IgE levels, lack of sensitizations towards environmental allergens, and absence of associated respiratory allergies. Accordingly, these patients are assigned to a nonallergic (intrinsic) form of the disease. OBJECTIVES: In order to define these two forms of AD more closely, 259 adult patients with AD were investigated. RESULTS: After a thorough diagnostic workup there were 18 patients (6.9%), who fulfilled the criteria of intrinsic AD. After follow-up, four additional patients had developed respiratory allergies or IgE-mediated sensitizations resulting in an overall proportion for intrinsic AD of 5.4%. CONCLUSIONS: Based on these figures the nature and relevance of the intrinsic form of AD deserves further evaluation.
Authors: Suhyun Cho; Hee Jung Kim; Sang Ho Oh; Chang Ook Park; Jin Young Jung; Kwang Hoon Lee Journal: Ann Dermatol Date: 2010-05-17 Impact factor: 1.444
Authors: Hye Rang On; Sang Eun Lee; Song Ee Kim; Won Jin Hong; Hyun Jung Kim; Toshifumi Nomura; Shotaro Suzuki; Hiroshi Shimizu; Soo Chan Kim Journal: Yonsei Med J Date: 2017-03 Impact factor: 2.759