Relationship between dietary histamine intake and clinical parameters in Behçet syndrome

Aims: This study investigated histamine intake and its associations with clinical and biochemical findings in patients with Behet syndrome. Methods:Patients with Behet syndrome were prospectively enrolled using a crosssectional, multicenter, and online survey design.Sociodemographic parameters, including age, gender, smoking and alcohol intake, nutritional counseling history, anthropometric measurements, clinical characteristics, and biochemical results, were obtained using an online questionnaire.Dietary histamine intake was determined using a food frequency questionnaire. Results:The study included 66 patients (mean age: 37.511.3years, women: 53%.Food consumption was reported to trigger oral aphthae in 81% of the individuals, and the most frequently reported triggers were eggplant (37.5%), tomatoes (37.5%), and citrus fruits (34.3%).There was a significant positive correlation between dietary histamine intake and white blood cell counts (r=0.650;p=0.050).There were no significant differences in the clinical characteristics, including oral aphthae, genital ulcers, uveitis, dermatologic lesions, gastrointestinal system involvement, joint involvement, and vascular involvement between patients with low and high dietary histamine intake.A positive correlation was found between dietary histamine intake and the frequency of attacks (r=0.324;p=0.008). Conclusions:This study showed that increased dietary histamine intake was associated with an increased frequency of attacks in patients with Behet syndrome.Oral aphthae are associated with certain foods, such as eggplant, tomatoes, and citrus fruit.