Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.4/1547
Título: Contact allergy to local anaesthetics–value of patch testing with a caine mix in the baseline series
Autor: Brinca, A
Cabral, R
Gonçalo, Margarida
Palavras-chave: Dermatite de Contacto Alérgica
Anestésicos Locais
Data: 2012
Editora: John Wiley & Sons
Citação: Contact Dermatitis. 2013;68(3):156-62.
Resumo: BACKGROUND: Contact allergy to local anaesthetics is relatively common. Patch testing with benzocaine in the European baseline series is recommended for diagnosis, even though a caine mix has been previously suggested to be superior. OBJECTIVES: To assess the frequency and patterns of contact allergy to local anaesthetics by using a caine mix (benzocaine, tetracaine, and cinchocaine) in the baseline series, and evaluate its efficiency as compared with benzocaine alone. METHODS: We reviewed the results of 2736 patch tests performed between 2000 and 2010, identifying patients with positive reactions to caine mix or to one of seven local anaesthetics. RESULTS: One hundred and twelve patients (4.1%) had at least one allergic reaction to local anaesthetics; 86 were tested with all seven local anaesthetics, resulting in 71 reactions in 53 patients. Cinchocaine gave the most reactions (50.7%); these occurred as a single reaction in 83.3% of patients, mostly with current or past relevance (97%). Benzocaine represented 22.5% of reactions, many of which were non-relevant (44%) or resulting from cross-reactions with para-compounds. CONCLUSIONS: Almost 70% of allergic reactions to local anaesthetics would have been missed if benzocaine had been used as a screening allergen. This study supports a recommendation to replace benzocaine with a caine mix containing cinchocaine in the baseline patch test series.
Peer review: yes
URI: http://hdl.handle.net/10400.4/1547
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