Delayed patch test reactions at days 7 and 9.
Contact Dermatitis
; 20(2): 127-32, 1989 Feb.
Article
em En
| MEDLINE
| ID: mdl-2706961
ABSTRACT
403 consecutive patients were examined on days 2, 4, 7, and 9 following application of patch tests. Late positive reactions, i.e., those which manifested after day 4, were seen in 29 patients (7.2%). The allergens which most commonly produced late positive reactions were neomycin (7), potassium dichromate (4), and cobalt (3). Paired patch test readings on days 4 and 7 were more reliable than those on days 2 and 4. If only 1 patch test reading were performed, a single reading on day 4 would have been most useful. The reading on day 9 proved to be of limited value. Of 11 patients who were retested after an interval of more than 6 months, 7 showed earlier eliciting reactions, which may have been due to active sensitization.
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01-internacional
Base de dados:
MEDLINE
Assunto principal:
Dermatite de Contato
Limite:
Humans
Idioma:
En
Revista:
Contact Dermatitis
Ano de publicação:
1989
Tipo de documento:
Article