Allergy and asthma proceedings最新文献

{"title":"Evaluation of atopic diseases in patients with allergic contact dermatitis.","authors":"Ashley Sandoval, Yela Jung, Iris Kim, Nina Sadigh, Jimmy Kwon, Yesim Yilmaz Demirdag, Asal Gharib Naderi, Tiffany Jean","doi":"10.2500/aap.2024.45.240019","DOIUrl":"https://doi.org/10.2500/aap.2024.45.240019","url":null,"abstract":"<p><p><b>Background:</b> There is controversy on whether allergic contact dermatitis (ACD) is associated with atopy. Research on eczema and the risk of ACD is mixed, and there is sparse literature on other atopic conditions. <b>Objective:</b> Our study examined the prevalence of several atopic conditions, including allergic rhinitis, eczema, asthma, and food allergies in patients with ACD, and compared these to patients without ACD. <b>Methods:</b> We retrospectively reviewed adult patients ages ≥ 18 years with ACD (n = 162) with positive patch testing results and documented any history of atopy, including childhood eczema, asthma, allergic rhinitis, and immunoglobulin E-mediated food allergy. The prevalence of atopic conditions was compared between our ACD cohort and controls without ACD (n = 163) from our electronic medical records system (age and gender matched). <b>Results:</b> Among our patients with ACD, 53 (33%) had allergic rhinitis, 22 (14%) had childhood eczema, 32 (20%) had asthma, and 8 (5%) had food allergies. We observed that the odds of atopy overall (n = 76) in the ACD group compared with the control group were increased (odds ratio [OR] 1.88; p = 0.007). Allergic rhinitis was the highest risk factor (n = 53) with an OR of 12.64 (p < 0.001). Childhood eczema (n = 22) was also increased in the ACD group (OR 2.4; p = 0.026). The odds of asthma and food allergy in the ACD group were also increased; however, the difference was not statistically significant from the control group (OR 1.76 [p = 0.071] and OR 2.76 [p = 0.139], respectively). <b>Conclusion:</b> Patients with ACD had increased odds of eczema, allergic rhinitis, and atopic conditions overall. Asthma and food allergies were not found to have a statistically significant correlation. Larger studies that delve into atopic risk factors in ACD would be important to confirm these findings.</p>","PeriodicalId":7646,"journal":{"name":"Allergy and asthma proceedings","volume":"45 4","pages":"262-267"},"PeriodicalIF":2.6,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141562358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Not all marketed skin cleansers' pH is optimal for atopic dermatitis.","authors":"Adil Khan, Juanita Valdes Camacho, Hannah Cummins, Hamana Tahir, Runhua Shi, David Kaufman, Sami L Bahna","doi":"10.2500/aap.2024.45.240026","DOIUrl":"https://doi.org/10.2500/aap.2024.45.240026","url":null,"abstract":"<p><p><b>Background:</b> The normally acidic skin pH changes in atopic dermatitis (AD) to alkaline, which contributes to the associated skin-barrier dysfunction. Hence, acidic cleansers would be preferred, but such information is scarce. <b>Objective:</b> Guiding health-care providers and patients on selecting skin cleansers with a pH optimal for AD. <b>Methods:</b> A total of 250 products were tested: 37 soaps (32 bars, 5 liquid) and 213 syndets (14 bars, 199 liquid); 10% solutions were tested for pH by using a pH meter; pH values 6.65-7.35 were considered neutral. <b>Results:</b> The pH of the tested skin cleansers varied widely (3.59-10.83). All 37 soaps were highly alkaline. In the 14 syndet bars, the pH was neutral in 6, alkaline in 8, and acidic in none. In the 199 syndet liquids, the pH was acidic in 84.9%, neutral in 11.1%, and alkaline in 4.0%. The product's pH was disclosed in none of the 37 soaps and in only 32 syndets (15%) , of which 9 bars were labeled \"balanced,\" whose measured pH was neutral in 6 and alkaline in 3. Of the other 23 syndets, the labeled pH was referred to as \"balanced\" in 20 whose measured pH was neutral in 2 (6.80, 6.88) and acidic in 18 (3.59-6.59). The pH in the other three syndets was 4.25-6.00. <b>Conclusion:</b> All tested soaps had undesirable pH, whereas 84.9% of the liquid syndets were acidic (which is desirable) and 11.1% were neutral (which could be acceptable). Only 12.8% of the products disclosed the pH, an issue in need of improvement.</p>","PeriodicalId":7646,"journal":{"name":"Allergy and asthma proceedings","volume":"45 4","pages":"284-287"},"PeriodicalIF":2.6,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141562362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Physician- and patient-reported outcomes by hereditary angioedema type: Data from a real-world study.","authors":"John Anderson, Daniel Soteres, Jennifer Mellor, Hannah Connolly, Kieran Wynne-Cattanach, Lucy Earl, Bob G Schultz, Salome Juethner","doi":"10.2500/aap.2024.45.240021","DOIUrl":"10.2500/aap.2024.45.240021","url":null,"abstract":"<p><p><b>Background:</b> Hereditary angioedema (HAE) is a rare genetic condition characterized by painful and often debilitating swelling attacks. Little is known about the differences in outcomes between patients with HAE types I or II (type I: HAE caused by C1 esterase inhibitor deficiency; type II: HAE caused by C1 esterase inhibitor dysfunction), with decreased or dysfunctional C1 esterase inhibitor (C1-INH), and those with normal C1-INH (nC1-INH-HAE). <b>Objective:</b> To compare physician- and patient-reported real-world outcomes in patients with HAE types I/II versus patients with nC1-INH-HAE. <b>Methods:</b> Data were drawn from the Adelphi HAE Disease Specific Programme^TM a real-world, cross-sectional survey of HAE-treating physicians and their patients in the United States conducted between July and November 2021. Physicians reported patient disease activity and severity, and recent attack history. Patient-reported outcomes were collected. Bivariate tests used were either the Student's <i>t</i>-test, the Fisher exact test, or Mann-Whitney U test. <b>Results:</b> Physicians (N = 67) provided data on 368 patients (92.4% HAE types I/II and 7.6% nC1-INH-HAE). Physicians reported that a higher proportion of patients with nC1-INH-HAE had moderate or high disease activity and moderate or severe disease severity both at diagnosis and at data collection versus those with HAE types I/II. Patients with nC1-INH-HAE versus patients with HAE types I/II experienced increased attack severity (34.6% versus 4.4%) and hospitalization rate during the most recent attack (39.3% versus 6.6%), and reported lower health status and quality of life, <i>via</i> the European Quality of Life 5 Dimension 5 Level (US tariff) and Angioedema Quality of Life, respectively. On average, 25% of the patients with nC1-INH-HAE reported absenteeism and work or activity impairment due to HAE compared with 2.7% of patients with HAE types I/II. Both patient groups reported improvements in disease activity and severity from diagnosis to the time of data collection. <b>Conclusion:</b> These real-world findings suggest that patients with nC1-INH-HAE have increased disease activity and severity, and experience greater impairment to their quality of life, work, and daily functioning than patients with HAE types I/II. Powered statistical analyses are required to confirm these findings.</p>","PeriodicalId":7646,"journal":{"name":"Allergy and asthma proceedings","volume":"45 4","pages":"247-254"},"PeriodicalIF":2.6,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11231741/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141562364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Association of serum pertussis antibodies with acute asthma attacks in children.","authors":"Tian Xie, Li-Li Zhong","doi":"10.2500/aap.2024.45.240030","DOIUrl":"https://doi.org/10.2500/aap.2024.45.240030","url":null,"abstract":"<p><p><b>Objective:</b> The aim of this study was to examine the serum antibody levels against pertussis toxin (PT) in children experiencing an acute asthma attack and to explore the potential association between these levels and asthma. <b>Methods:</b> A prospective investigation was conducted, which involved 107 children with acute asthma attacks and 77 children diagnosed with bronchitis. The serum immunoglobulin G (IgG) antibody levels specific to PT were measured by using an in-house enzyme-linked immunosorbent assay. Based on the serum PT-IgG antibody levels, the children with asthma were categorized into three groups: non-pertussis infected, suspected pertussis infected, and recent pertussis infected. The clinical manifestations and pulmonary function of pediatric patients diagnosed with asthma were assessed and compared across various groups. <b>Results:</b> Of the total asthma group, 25 patients tested positive for PT-IgG, whereas only six patients in the bronchitis group were PT-IgG positive. The prevalence of recent pertussis infection was observed to be higher in the asthma group compared with the bronchitis group. Within the asthma group, those with recent pertussis infection exhibited a higher likelihood of experiencing wheezing and impaired lung function in comparison with the non-pertussis infection group. <b>Conclusion:</b> Pertussis infection is relatively common in children with asthma and correlates with the severity of asthma.</p>","PeriodicalId":7646,"journal":{"name":"Allergy and asthma proceedings","volume":"45 4","pages":"e54-e61"},"PeriodicalIF":2.6,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141562400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Consistent efficacy and safety of sublingual immunotherapy tablets across allergens and geographic regions.","authors":"Thomas Stranzl, David I Bernstein, Tomokazu Matsuoka, Stephen Durham, Yuriko Maekawa, Peter Sejer Andersen, Josephine Nolte, Veronica Hulstrom, Hendrik Nolte","doi":"10.2500/aap.2024.45.240020","DOIUrl":"10.2500/aap.2024.45.240020","url":null,"abstract":"<p><p><b>Background:</b> The clinical development program of the SQ grass, ragweed, tree, and house dust mite (HDM) sublingual immunotherapy (SLIT)-tablets for allergic rhinitis/conjunctivitis (AR/C) included clinical trials conducted in North America, Europe, and Japan. <b>Objective:</b> Data from these trials were analyzed to assess efficacy, immunologic mechanisms, and safety outcomes across allergens and geographic regions. <b>Methods:</b> Thirteen phase III, double-blind, placebo controlled trials in the subjects with AR/C were conducted in North America, Europe (including Russia), and Japan (N = 7763 analyzed). Trials were generally similar with respect to medical practice, target population, eligibility criteria, and efficacy and safety monitoring. Data were analyzed for the approved doses in North America and Europe. Four statistical models were used to enhance comparison of the efficacy end points among the trials. <b>Results:</b> The SLIT-tablets demonstrated consistent efficacy across allergens and regions, regardless of the statistical analysis used. Relative improvement in the primary efficacy end point compared with placebo by using the predefined protocol analysis ranged from 17.9% to 32.8%, 17.5% to 19.3%, 20.6% to 38.3%, and 39.6% with the grass, HDM, ragweed, and tree SLIT-tablets, respectively. The kinetics of specific immunoglobulin E (IgE) and IgG4 responses were similar among the allergens and regions. Local application-site reactions were the most common adverse events for all allergens and in all regions. Most treatment-related adverse events for all allergens and in all regions were mild in severity. The rate of systemic allergic reactions was similar across regions (0%-0.54%). <b>Conclusion:</b> Confirmatory phase III trials for SLIT-tablets in the treatment of AR/C showed consistent efficacy, immunologic, and safety outcomes across allergens and geographic regions.</p>","PeriodicalId":7646,"journal":{"name":"Allergy and asthma proceedings","volume":" ","pages":"232-239"},"PeriodicalIF":2.6,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140955632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Leveraging advanced sensors in pollen research.","authors":"Zhihao Jin, Wenhao Wang, Stanley Fineman, Yang Liu","doi":"10.2500/aap.2024.45.240036","DOIUrl":"https://doi.org/10.2500/aap.2024.45.240036","url":null,"abstract":"","PeriodicalId":7646,"journal":{"name":"Allergy and asthma proceedings","volume":"45 4","pages":"e62-e64"},"PeriodicalIF":2.6,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141562361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficacy and safety of hymenoptera venom immunotherapy.","authors":"Hazal Kayikci, Ozge Can Bostan, Gulseren Tuncay, Melek Cihanbeylerden, Ebru Damadoglu, Gul Karakaya, Ali Fuat Kalyoncu","doi":"10.2500/aap.2024.45.240035","DOIUrl":"https://doi.org/10.2500/aap.2024.45.240035","url":null,"abstract":"<p><p><b>Background:</b> Being stung by Hymenoptera species can cause life-threatening anaphylaxis. Although venom immunotherapy (VIT) seems to be the most effective treatment, its long-term efficacy, and risk factors for adverse events remain unclear. <b>Objective:</b> The objective was to investigate the long-term efficacy of VIT and evaluate adverse events and risk factors related to this. <b>Method:</b> Patients who received VIT in a tertiary-care adult allergy clinic between January 2005 and July 2022 were included. Patients' data were compared with those of individuals who had been diagnosed with bee and/or wasp venom allergy during the same period but had not received VIT and experienced field re-stings. <b>Results:</b> The study included 105 patients with venom allergy, of whom 68 received VIT and 37 did not receive VIT. Twenty-three patients (34%) completed 5 years of VIT, and the overall mean ± standard deviation VIT duration was 46.9 ± 20.9 months. Re-stings occurred in 5 of 23 patients who completed 5 years of VIT, and none of them developed a systemic reaction. Eighteen patients (40%) experienced re-stings after prematurely discontinuing VIT, of whom eight (44%) developed a systemic reaction. In the control group of patients who did not receive VIT, 26 patients (70.3%) experienced re-stings, and all had systemic reactions (100%), with no change in their median Mueller scores. There was a significant difference in the median Mueller score change between the patients who received VIT and the controls who did not (p = 0.016). A total of 13 patients (19%) experienced adverse events while receiving VIT, which were systemic reactions in nine honeybee VIT. The use of β-blockers was determined as the most important risk factor (odds ratio 15.9 [95% confidence interval, 1.2-208.8]; p = 0.035). <b>Conclusion:</b> It was confirmed that VIT was effective in both reducing the incidence and the severity of re-sting reactions. These effects were more pronounced in the patients who completed 5 years of VIT.</p>","PeriodicalId":7646,"journal":{"name":"Allergy and asthma proceedings","volume":"45 4","pages":"268-275"},"PeriodicalIF":2.6,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141562403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"What can be learned from real-world data about chronic spontaneous urticaria?","authors":"Ozge Sevil Karstarli Bakay, Nida Kacar, Burak Gul, Sule Goksin, Yunus Gural","doi":"10.2500/aap.2024.45.240041","DOIUrl":"https://doi.org/10.2500/aap.2024.45.240041","url":null,"abstract":"<p><p><b>Background:</b> Chronic spontaneous urticaria (CSU) is a common disease with complex pathogenesis. Patients' clinical characteristics and responses to treatment vary. <b>Objective:</b> We aimed to investigate the role of data obtained from routinely recommended tests in predicting the response to omalizumab, the only biologic agent approved for treatment, and in defining the clinical characteristics of the patients. <b>Methods:</b> A retrospective study of patients who started omalizumab treatment for CSU between 2015 and 2022 at the Department of Dermatology, Pamukkale University, was conducted. Response criteria were based on the urticaria control test, and patients with a urticaria control test score <12 at 6 months were considered treatment non-responders. Eosinophil and basophil counts, neutrophil-lymphocyte ratio (NLR), systemic immune inflammation index (SII), systemic inflammation response index (SIRI), and total immunoglobulin E (IgE) levels of the patients were evaluated before treatment and at the sixth month of treatment. <b>Results:</b> A total of 23.1% of the patients were unresponsive to omalizumab. The response rate to the omalizumab treatment of the patients with a total IgE level ≤ 30 IU/L (n = 4 [5.7%]) was significantly lower than patients with total IgE level > 30 IU/L (n = 66 [94.3%]) (p = 0.015). The mean ± standard deviation SIRI levels were significantly higher in non-responders versus responders (1.53 ± 1.03 versus 1.15 ± 7.76; p = 0.026). Eosinophil counts positively correlated with basophil counts (r = 587; p < 0.001) and IgE levels (r = 0.290; p = 0.005) but a negative correlation was found with levels of NLR (r = -0.475; p < 0.001), SIRI (r = -0.259; p = 0.013), and SII (r = -0.285; p = 0.006). NLR levels were lower in CSU patients with atopy, than in those without atopy (1.9 ± 0.9 vs 2.9 ± 2.1, <i>p</i> = 0.022). <b>Conclusion:</b> We suggest that eosinopenia and high NLR levels are linked to autoimmune CSU. Predicting a poor response to omalizumab seems possible with total IgE levels < 30 IU/L and high SIRI levels.</p>","PeriodicalId":7646,"journal":{"name":"Allergy and asthma proceedings","volume":"45 4","pages":"255-261"},"PeriodicalIF":2.6,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141562367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of clinical phenotypic characteristics of patients with angioedema without wheals in a turkish population.","authors":"Mehmet Erdem Cakmak, Ozge Can Bostan, Saltuk Bugra Kaya, Gul Karakaya, Ali Fuat Kalyoncu, Ebru Damadoglu","doi":"10.2500/aap.2024.45.240034","DOIUrl":"https://doi.org/10.2500/aap.2024.45.240034","url":null,"abstract":"<p><p><b>Background:</b> Angioedema (AE) is defined as localized, self-limited swelling of subcutaneous tissues and mucosa. <b>Objective:</b> The aim of this study was to compare the phenotypic characteristics of patients with AE without wheals. <b>Methods:</b> This prospective study included adult patients with recurrent AE without wheals. Demographic and laboratory data of the patients were recorded in the patient file when they presented to the outpatient clinic between August 2018 and August 2020. The patients were contacted by phone to evaluate whether their AE had gone into remission between October 2023 and January 2024. The phenotypic characteristics of AE subtypes were compared. <b>Results:</b> The study included a total of 143 patients. The average age, age of onset of AE, rates of diabetes mellitus, hypertension and coronary artery disease were higher in the patients with angiotensin-converting enzyme inhibitor (ACEI) use related acquired AE (AAE) (AAE-ACEI). The rates of allergic rhinitis, drug allergy, atopy, and aeroallergen sensitivity, and the median total immunoglobulin E level were higher in patients with idiopathic histaminergic AAE (AAE-IH). The rate of face and/or perioral AE attacks was higher in the patients with AAE-ACEI, AAE-IH, and idiopathic non-histaminergic AAE. The rate of AE attacks in limbs, abdominal, genital and other parts of the body was higher in patients with hereditary AE (HAE). The baseline AE activity score was lower in the patients with AAE-IH and higher in the patients with HAE. In long-term follow-up, the remission rate of AE attacks was significant higher in patients with AAE-ACEI and AAE-IH. <b>Conclusion:</b> The phenotypic characteristic features of Turkish patients with AE without wheals may vary, depending on the underlying AE pathogenesis. C1 inhibitor level and function, complement C4 and C1q, and genetic tests contributed to the diagnosis; other laboratory tests did not contribute to the diagnosis.</p>","PeriodicalId":7646,"journal":{"name":"Allergy and asthma proceedings","volume":"45 4","pages":"240-246"},"PeriodicalIF":2.6,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141562399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Early testing and grade of the reaction are affecting factors of skin test positivity in β-Lactam allergies.","authors":"Hatice Serpil Akten, Ceyda Tunakan Dalgc, Meryem Demir, Kasim Okan, Onurcan Yildirim, Reyhan Gumusburun, Sinem Inan, Gulhan Bogtekin, Nihal Mete Gokmen, Okan Gulbahar, Ali Kokuludag, Su Ozgur, Aytul Zerrin Sin","doi":"10.2500/aap.2024.45.240022","DOIUrl":"https://doi.org/10.2500/aap.2024.45.240022","url":null,"abstract":"<p><p><b>Background:</b> β-Lactams are the most widely used antibiotic family in the world. Nevertheless, they also stand out as the primary culprits for inducing drug hypersensitivity reactions (HSR). <b>Methods:</b> Between May 2018 and March 2023, patients with suspected HSRs to β-lactams, who underwent skin tests (ST), were retrospectively screened. The determinants of allergenic penicillin (DAP) tests, which include penicillin minor and major determinants, clavulanic acid, and amoxicillin, along with ampicillin, sulbactam, the identified culprit drugs, and alternative cephalosporins, which include cefuroxime, ceftriaxone prick and/or intradermal tests, were administered. The analysis focused on identifying positive ST results and determining the true HSRs rates in this patient cohort. <b>Results:</b> Of the 147 patients, 78.9% (n = 116) were women and the median (minimum-maximum) age was 41 years (18-71 years). Mild HSRs (grades 1-2) were observed in 72.78% (n = 107), whereas 24.4% (n = 36) had severe reactions (grades 3-4) and 2.7% (n = 4) had an unknown grade. Of the patients, 64% (n = 94) experienced HSRs within the first hour after the last dose of the identified culprit drug. The overall positivity rate for all STs was 26.5% (n = 39). ST positivity rates were notably higher in individuals who had experienced HSRs within the past 6 months (p = 0.02) and those with severe anaphylaxis (p < 0.001). <b>Conclusion:</b> β-Lactam ST positivity is higher, especially in those with grades 3-4 reactions and consulted a physician within the first 6 months after their HSRs.</p>","PeriodicalId":7646,"journal":{"name":"Allergy and asthma proceedings","volume":"45 4","pages":"e23-e30"},"PeriodicalIF":2.6,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141562402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}