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English Abstract
Journal Article
[Epidemiologic features in patients with antihistamine-resistant chronic urticaria].
Revista Alergia Mexico : Organo Oficial de la Sociedad Mexicana de Alergia e Inmunología, A.C 2015 October
BACKGROUND: Current information on the particular features of patients suffering chronic spontaneous urticaria refractory to treatment is limited.
OBJECTIVE: To investigate demographic and clinical characteristics in patients with refractory chronic spontaneous urticaria.
MATERIAL AND METHODS: A retrospective analysis of the clinical and demographic information of patients consulting Allergy services from two hospitals in Caracas, Venezuela, who presented spontaneous urticaria lasting more than 6 weeks and did not respond to, at least, one course of treatment with antihistamines.
RESULTS: Refractory chronic spontaneous urticaria was frequent in Hispanic female patients aged 20 to 59 years, with moderate symptoms, individual lesions lasting less than three hours, and wheal diameters between 1 and 3 cm. Angioedema, alone or associated to urticaria was present in 14% of the patients. Most frequent comorbidities were asthma, rhinitis and rhinosinusitis, thyroid diseases and hypertension.
CONCLUSION: Refractory chronic spontaneous urticaria constitutes a highly prevalent subgroup of chronic urticaria which represents an important therapeutic challenge. This study did not demonstrate differential characteristics distinguishing refractory chronic spontaneous urticaria from chronic spontaneous urticaria patients who respond to the treatment with antihistamines.
OBJECTIVE: To investigate demographic and clinical characteristics in patients with refractory chronic spontaneous urticaria.
MATERIAL AND METHODS: A retrospective analysis of the clinical and demographic information of patients consulting Allergy services from two hospitals in Caracas, Venezuela, who presented spontaneous urticaria lasting more than 6 weeks and did not respond to, at least, one course of treatment with antihistamines.
RESULTS: Refractory chronic spontaneous urticaria was frequent in Hispanic female patients aged 20 to 59 years, with moderate symptoms, individual lesions lasting less than three hours, and wheal diameters between 1 and 3 cm. Angioedema, alone or associated to urticaria was present in 14% of the patients. Most frequent comorbidities were asthma, rhinitis and rhinosinusitis, thyroid diseases and hypertension.
CONCLUSION: Refractory chronic spontaneous urticaria constitutes a highly prevalent subgroup of chronic urticaria which represents an important therapeutic challenge. This study did not demonstrate differential characteristics distinguishing refractory chronic spontaneous urticaria from chronic spontaneous urticaria patients who respond to the treatment with antihistamines.
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