Journal of otolaryngology - head & neck surgery = Le Journal d'oto-rhino-laryngologie et de chirurgie cervico-faciale · 2011
Evaluation of contact sensitivity in patients with isolated itching of the external auditory canal.
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Acar Baran, Karadag Ayse Serap, Karabulut Hayriye, Babademez Mehmet Ali, Zaim Murat, Karasen Rıza Murat
Аннотация
OBJECTIVE: This study was designed to demonstrate the frequency of sensitivity to European standard patch test allergens in patients with isolated itching of the external auditory canal (EAC).
STUDY DESIGN: A prospective case-control study.
METHODS: Fifty-six female patients with the complaint of recurrent EAC itching and 30 female controls without pruritis of the ears were patch-tested with 25 allergens of the European standard series.
RESULTS: Twenty-four patients (25.5%) had one or more positive patch test reactions. In 21.4% of patients, nickel sulphate was the most frequent sensitizer, but there was no statistically significant difference in the nickel sensitization rate between patients and controls (p > .05). Sensitivity rates were much lower for the other allergens. There was no association between contact sensitivity to fragrances and to preservatives and patients with pruritis of the ears.
CONCLUSION: Our results do not demonstrate that most patients with pruritic ears probably suffer from allergic contact dermatitis.
STUDY DESIGN: A prospective case-control study.
METHODS: Fifty-six female patients with the complaint of recurrent EAC itching and 30 female controls without pruritis of the ears were patch-tested with 25 allergens of the European standard series.
RESULTS: Twenty-four patients (25.5%) had one or more positive patch test reactions. In 21.4% of patients, nickel sulphate was the most frequent sensitizer, but there was no statistically significant difference in the nickel sensitization rate between patients and controls (p > .05). Sensitivity rates were much lower for the other allergens. There was no association between contact sensitivity to fragrances and to preservatives and patients with pruritis of the ears.
CONCLUSION: Our results do not demonstrate that most patients with pruritic ears probably suffer from allergic contact dermatitis.