• Iva Bešlić, Alen Vrtarić, Ante Bešlić, Ivana Škrinjar, Danijel Crnković, and Liborija Lugović-Mihić.
• School of Dental Medicine, University of Zagreb, Zagreb, Croatia.
• Acta Clin Croat. 2023 Aug 1; 62 (2): 373377373-377.

AbstractChronic spontaneous urticaria (CSU) is a dermatological disorder accompanied by itching that greatly affects the quality of life and quality of sleep. Therefore, it is assumed that CSU patients consequently experience reduced melatonin secretion and lower values of serum or salivary melatonin. This pilot study included 20 patients with CSU (chronic urticaria of unknown etiology that lasts for more than 6 weeks) and 10 healthy controls. All subjects were examined by a dermatovenereologist-allergist, as well as an oral pathologist, to exclude oral pathological conditions. Salivary melatonin levels were determined by ELISA and all subjects completed a standardized Dermatology Life Quality Index questionnaire and Pittsburgh Sleep Quality Index on the same day they gave a saliva sample for analysis. According to our results, 86% of CSU patients had decreased values of salivary melatonin, and lower salivary melatonin values significantly correlated with a reduced quality of life in CSU patients. This study was the first to analyze melatonin in CSU patients, also suggesting a possible new therapeutic option for the treatment of CSU.Sestre Milosrdnice University Hospital.

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