A Case of Recurrent Urticaria Due to Formaldehyde Release from Root-Canal Disinfectant
Yonsei Medical Journal
;
: 252-254, 2017.
Artigo
em Inglês
| WPRIM
| ID: wpr-126249
ABSTRACT
Although formaldehyde is well known to cause type 4 hypersensitivity, immunoglobulin E (IgE)-mediated hypersensitivity to formaldehyde is rare. Here, we report a case of recurrent generalized urticaria after endodontic treatment using a para-formaldehyde (PFA)-containing root canal sealant and present a review of previous studies describing cases of immediate hypersensitivity reactions to formaldehyde. A 50-year-old man visited our allergy clinic for recurrent generalized urticaria several hours after endodontic treatment. Prick tests to latex, lidocaine, and formaldehyde showed negative reactions. However, swelling and redness at the prick site continued for several days. The level of formaldehyde-specific IgE was high (class 4). Thus, the patient was deemed to have experienced an IgE-mediated hypersensitivity reaction caused by the PFA used in the root canal disinfectant. Accordingly, we suggest that physicians should pay attention to type I hypersensitivity reactions to root canal disinfectants, even if the symptoms occur several hours after exposure.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Recidiva
/
Fatores de Tempo
/
Urticária
/
Cimento de Óxido de Zinco e Eugenol
/
Imunoglobulina E
/
Testes Cutâneos
/
Desinfetantes
/
Formaldeído
/
Hipersensibilidade Imediata
Limite:
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Yonsei Medical Journal
Ano de publicação:
2017
Tipo de documento:
Artigo
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