scholarly journals The Contradiction of Drug Allergy in Patients with Cystic Fibrosis and Review of the Literature

2021 ◽  
Author(s):  
Gokcen Dilsa Tugcu ◽  
Nagehan Emiralioğlu ◽  
Ebru Yalçın ◽  
Umit Sahiner ◽  
Deniz Doğru ◽  
...  
Keyword(s):  
Cystic Fibrosis ◽  
Drug Allergy ◽  
Drug Hypersensitivity ◽  
Skin Tests ◽  
Beta Lactam ◽  
Provocation Tests ◽  
Maculopapular Eruption ◽  
Drug Hypersensitivity Reactions ◽  
Amoxicillin Clavulanic Acid ◽  
Multiple Drugs

Background: Cystic fibrosis (CF) is reported to be a risk factor for drug hypersensitivity. However, there is conflicting data about true prevalence of drug allergy in children with CF. Methods: The suspicious drug hypersensitivity reactions (DHR) of children with CF were enquired by European Network for Drug Allergy (ENDA) questionnaire and skin tests and/or drug provocation tests were performed according to established guidelines. Results: Two hundred and nineteen children (48.9% boys; median [IQR] age, 8.4 years [4.8-12.4 years]) with cystic fibrosis were included in the study, from whom 22 patients with 24 suspected DHRs were evaluated. Most of the suspected DHRs were non-immediate (n=16, 66.6%) type and the offending drugs were amoxicillin clavulanic acid (n=7), macrolides (n=4), trimethoprim sulfamethoxazole (TMP/SMX) (n=2), piperacillin tazobactam (n=1), pancrelipase (n=1) and ursodeoxycholic acid (n=1). Eight (33.3%) of the DHRs were classified as immediate [ceftriaxone (n=2), ceftazidim (n=2), meropenem (n=1), ambisome (n=2), vancomycin (n=1)]. The main presenting clinical presentations were maculopapular eruption (41.6%) and urticaria (37.5%), accompanied by angioedema (8.3%), flushing (12.5%) and vomiting (8.3%). Nine skin tests (with beta-lactam protocol in 6 patients) and 24 DPTs were performed and none of the skin tests revealed a positive result, however 2 DPTs with TMP/SMX were positive. Conclusion: Actual drug allergy was demonstrated in 2 of 219 patients (0.9%) with nonbeta-lactam antibiotics. These results conflict with previous researches that showed higher drug allergy rates but were consistent with some recent studies. Numerous and long-term use of multiple drugs during management of cystic fibrosis may contribute to tolerance development.

Systemic reaction during intradermal skin tests with beta-lactams

2021 ◽  
Vol 14 (3) ◽  
pp. e240050
Author(s):  
Joana Carvalho ◽  
Georgeta Oliveira
Keyword(s):  
Skin Testing ◽  
Drug Hypersensitivity ◽  
Systemic Reaction ◽  
Skin Tests ◽  
Beta Lactam ◽  
Provocation Tests ◽  
Maculopapular Eruption ◽  
Intradermal Tests ◽  
Amoxicillin Clavulanate ◽  
Immediate Reactions

Beta-lactam (BL) antibiotics are the most frequent cause of drug hypersensitivity in children, inducing both immediate and non-immediate reactions. Here we report a case of a 4-year-old child with a disseminated maculopapular exanthema 7 days after the first dose of amoxicillin–clavulanate, referred to our paediatric allergy department. Skin prick tests were negative. Intradermal tests were performed and, after 10 hours, indurated wheals larger than 10×10 mm with progressive erythema and disseminated maculopapular eruption were developed, related to amoxicillin and amoxicillin–clavulanate. Systemic reactions to BL skin tests are rarely reported and the majority are immediate reactions. This case illustrates a rare example of a non-immediate systemic reaction to intradermal tests, underlying the importance of skin testing before drug provocation tests in cases of moderate to severe non-immediate reactions.

scholarly journals Diagnosing and Managing Patients with Reactions to Radiocontrast Media

2021 ◽  
Vol 8 (3) ◽  
pp. 210-221
Author(s):  
Knut Brockow
Keyword(s):  
Skin Testing ◽  
Drug Hypersensitivity ◽  
Skin Tests ◽  
Hypersensitivity Reactions ◽  
Positive Skin ◽  
Provocation Tests ◽  
Ring Molecules ◽  
Allergic Skin ◽  
Drug Hypersensitivity Reactions ◽  
Drug Provocation Tests

Abstract Purpose of the review Iodinated radio contrast media (RCM) belong to the most common elicitors of drug hypersensitivity reactions (HR). Urticaria or anaphylaxis may occur ≤ 1(−6) hour(s) (immediate HR) and exanthems (non-immediate HR) develop > 6 h after application of RCM. Evidence for an immunologic mechanism of RCM HR against the different RCM benzene ring molecules and the benefit of allergological testing in patients with previous hypersensitivity reactions is progressively increasing. Recent findings Positive skin tests can confirm allergy in patients with previous reactions to RCM and help to select alternative better tolerated RCMs. Severe hypersensitivity reactions are mainly caused by an allergic mechanism, whereas the majority of non-severe reactions appear to be non-allergic. Skin testing is highly recommended to help identify allergic hypersensitivity reactions and to select alternatives. Using structurally different RCM is more effective than premedication for the prevention of future reactions. Drug provocation tests to RCM have been increasingly used, but are not yet standardized among different centers. Summary In patients with previous severe hypersensitivity reactions to RCM, skin testing is recommended. For future RCM-enhanced examinations in patients with previous reactions, structurally different, skin test-negative preparations should be applied. Drug provocation tests do confirm or exclude RCM hypersensitivity or may demonstrate tolerability of alternative RCMs.

scholarly journals Mild to moderate hypersensitivity reactions to beta-lactams in children: a single-centre retrospective review

2019 ◽  
Vol 3 (1) ◽  
pp. e000435 ◽  
Author(s):  
Leticia Vila ◽  
Vanesa Garcia ◽  
Oihana Martinez Azcona ◽  
Loreley Pineiro ◽  
Angela Meijide ◽  
...  
Keyword(s):  
Drug Hypersensitivity ◽  
Skin Tests ◽  
Penicillin G ◽  
Hypersensitivity Reactions ◽  
Beta Lactam ◽  
Patch Tests ◽  
Provocation Tests ◽  
Delayed Reactions ◽  
Diagnostic Work ◽  
Low Sensitivity

ObjectiveBeta-lactam (BL) antibiotics are the most reported drugs in hypersensitivity reactions in children. More than 90% of these children tolerate the suspected drug after diagnostic work-up. Skin tests (STs) show low sensitivity. Our aim was to assess the performance of drug provocation tests (DPTs) without previous ST in mild and moderate delayed reactions and to propose a new DPT protocol.Design of the studyCharts from 213 children under 15 years of age referred for suspected BL allergy from 2011 to 1013 were reviewed. Prick, intradermal and patch tests were performed with major determinant penicilloyl-polylysine, minor determinant mixture, amoxicillin (AMX), cefuroxime, penicillin G and AMX–clavulamate. Children with negative skin tests underwent DPT. After an initial full dose of antibiotic, DPT was carried on for 3 days at home in patients reacting within the first 3 days of treatment. If the reaction took place from day 4 on of treatment, patients took the antibiotic for 5 days.ResultsWe included 108 girls and 105 boys. Mean age at the time of reaction was 3.66±3.06 years. 195 patients (91.5%) reacted to one BL. 154 reactions (67.2%) were non-immediate. Mild to moderate skin manifestations were most frequently reported. AMX–clavulanate was the most frequently involved (63.4%). DPT confirmed the diagnosis of drug hypersensitivity in 17 (7.3%) cases. These 17 patients had negative ST.ConclusionIn mild and moderate cases of BL hypersensitivity, diagnosis can be performed by DPT without previous ST

Early Biomarkers for Severe Drug Hypersensitivity Reactions

2019 ◽  
Vol 25 (36) ◽  
pp. 3829-3839 ◽  
Author(s):  
Adriana Ariza ◽  
Maria J. Torres ◽  
Carmen Moreno-Aguilar ◽  
Rubén Fernández-Santamaría ◽  
Tahia D. Fernández
Keyword(s):  
Drug Exposure ◽  
Drug Hypersensitivity ◽  
Clinical Manifestations ◽  
Skin Tests ◽  
Time Interval ◽  
Hypersensitivity Reactions ◽  
Early Biomarkers ◽  
Immunological Mechanisms ◽  
Drug Hypersensitivity Reactions ◽  
Delayed Reactions

Drug hypersensitivity reactions (DHRs) are typically classified into immediate and delayed reactions based on the time interval between drug exposure and onset of symptoms. Clinical manifestations range from mild to severe and life-threatening reactions. The most severe clinical entities are anaphylaxis and anaphylactic shock for immediate reactions, and severe cutaneous adverse reactions such as Steven Johnson Syndrome and Toxic Epidermal Necrolysis for delayed reactions. The diagnosis is complex and challenging, as drug provocation tests and even skin tests can be very risky procedures, which makes them not recommended. Therefore, it is necessary to search for useful early biomarkers to manage the diagnosis of these reactions. These biomarkers could be useful to determine the clinical entity, but not to identify the culprit drug. Some of the currently available biomarkers are few genetic associations of drug allergy with polymorphisms of human leukocyte antigen (HLA), the detection of inflammatory and lipid mediators in serum, or the detection of cytokines, chemokines, and cytotoxic markers in skin biopsies. In this literature review, it has been summarize the immunological mechanisms involved in severe reactions, both immediate and delayed, and different early biomarkers: those currently used for the diagnosis of these reactions as well as possible early biomarkers that could be useful with further studies to standardize their clinical use.

scholarly journals Converter Phenotype: A New Profile That Is Not Exclusive to Taxanes

2022 ◽  
Vol 2 ◽  
Author(s):  
Teodorikez Wilfox Jimenez-Rodriguez ◽  
Francisco Manuel Marco de la Calle ◽  
Inmaculada Lozano-Cubo ◽  
Rosa Ana Montoyo-Anton ◽  
Victor Soriano-Gomis ◽  
...  
Keyword(s):  
Clinical Characteristics ◽  
Drug Exposure ◽  
Drug Hypersensitivity ◽  
Skin Tests ◽  
Hypersensitivity Reactions ◽  
Test Results ◽  
Drug Reactions ◽  
Immediate Hypersensitivity ◽  
Drug Hypersensitivity Reactions ◽  
Median Interval

Introduction: Phenotype I hypersensitivity reactions are the most commonly reported drug reactions; however, precision medicine has made it possible to characterize new phenotypes. A recent communication proposed the existence of a “converter phenotype,” which would affect patients who present non-immediate hypersensitivity reactions and in subsequent exposures develop immediate hypersensitivity reactions. This study aimed to describe the clinical characteristics of converter phenotype reactions and their evolution during desensitization to chemotherapeutic drugs and monoclonal antibodies.Methods: We retrospectively reviewed our database of patients undergoing desensitization to chemotherapy or biological agents and selected those with a converter phenotype. Demographic and clinical characteristics of the patients, the results of skin tests, tryptase and IL-6 levels, and desensitization outcomes were assessed.Results: Of 116 patients evaluated, 12 (10.3%) were identified as having a converter phenotype. The median interval between drug exposure and reaction was 90.6 h (range 8-288 h). After the conversion, phenotype I was the most frequent (58.3%), followed by cytokine release reactions (33.3%). Fifty-one desensitizations were undertaken and all treatments completed, with 10 (19.6%) breakthrough reactions. No new changes in the phenotype were detected.Conclusions: The symptoms of non-immediate drug hypersensitivity reactions may indicate the need for an early allergological evaluation to assess the risk of future immediate drug reactions. Clinical characteristics, skin test results, and biomarkers can help predict responses to rapid drug desensitization, guiding clinicians on how to optimize therapy delivery while maintaining patient safety.

scholarly journals How much drug allergies affect quality of life?

2020 ◽  
Vol 8 (12) ◽  
pp. 4232
Author(s):  
Feridun Gurlek ◽  
Eyyup Tasdemir
Keyword(s):  
Quality Of Life ◽  
Outpatient Clinic ◽  
Drug Allergy ◽  
Drug Hypersensitivity ◽  
Well Being ◽  
Life Questionnaire ◽  
Related Quality ◽  
Drug Hypersensitivity Reactions ◽  
Health Related

Background: Drug hypersensitivity reactions are considered public health problems due to associated morbidity and socioeconomic costs. The evaluation of health-related quality of life in patients with drug hypersensitivity is still a widely unconsidered topic. The aim of our study is to reveal the effects of drug allergy on the quality of life of patients who apply to our outpatient clinic with the complaint of drug allergy.Methods: This study is prospective a questionnaire study under supervision. Patients who applied to the University of Health Sciences, Bursa Postgraduate Research and Training Hospital Department of Allergy outpatient clinic between August 2019 and May 2020 with the complaint of drug allergy filled out the quality of life questionnaire (DrHy-Q), and short questionnaire of psychological well-being index (PGWBIs) under the supervision of a specialist physician before the diagnostic procedures.Results: The study was conducted with 150 cases and 73.3 % (n=110) of the cases were female and 26.7% (n=40) were male. No significant correlation was found between the demographic characteristics of the patients, the observed symptoms, the culprit drugs, familial and individual comorbid and psychological diseases, and DrHY-Q (p>0.05). DrHY-Q was only affected from the type of allergic reaction. A negative statistically significant weak correlation was also detected between the total DrHY-Q score and the PGWBI total score (r: -0.283; p<0.01).Conclusions: We found that DrHY-Q is sensitive to reaction type and able to discriminative type 1 and type 2 reactions (p=0.017; p<0.05). We think that more comprehensive studies are needed on this subject.

In vitrotests for drug hypersensitivity reactions: an ENDA/EAACI Drug Allergy Interest Group position paper

Allergy ◽  
2016 ◽  
Vol 71 (8) ◽  
pp. 1103-1134 ◽  
Author(s):  
C. Mayorga ◽  
G. Celik ◽  
P. Rouzaire ◽  
P. Whitaker ◽  
P. Bonadonna ◽  
...  
Keyword(s):  
Interest Group ◽  
Drug Allergy ◽  
Drug Hypersensitivity ◽  
Position Paper ◽  
Hypersensitivity Reactions ◽  
Group Position ◽  
Drug Hypersensitivity Reactions

scholarly journals Drug Allergy Profile From a National Drug Allergy Registry

2021 ◽  
Vol 11 ◽  
Author(s):  
Mona Al-Ahmad ◽  
Jusufovic Edin ◽  
Mosa Fardous ◽  
Tito Rodriguez-Bouza
Keyword(s):  
Respiratory Symptoms ◽  
Drug Allergy ◽  
Drug Hypersensitivity ◽  
Clinical History ◽  
Diagnostic Methods ◽  
Skin Tests ◽  
Presenting Symptoms ◽  
National Drug ◽  
Inflammatory Drugs ◽  
Anti Inflammatory

Background: Drug hypersensitivity reactions (DHRs) are among the most frequent reasons for consultation in allergy departments and are becoming more common due to increasing prevalence and case complexity.Objective: To describe the most common drugs associated with clinical reactions, diagnostic methods used, and outcomes of allergic evaluations of a national drug allergy registry over a 12-year period were used.Methods: An observational, prospective, patient’s data registry-based study was conducted to analyze all referrals to the drug allergy outpatient clinics at Al-Rashed Allergy Center, Kuwait, between 2007 and 2019. Demographics, description of DHRs, and results of allergy tests to potential causative medications were reviewed. Diagnostic methods were focused mainly on skin tests (STs) and drug provocation test (DPT), when indicated.Results: We evaluated 1,553 patients with reported DHRs. The mean age of the population was 41.52 ± 16.93 years, and the study population consisted of 63.7% female patients. Hypersensitivity was finally confirmed in 645 (41.5%) of patients, probable in 199 (12.8%), and not confirmed/nonallergic in 709 (45.6%) patients. Anti-inflammatory drugs and analgesics contributed to 39.22% of all confirmed drug allergies, followed by antibiotics 38.1% (β-lactam antibiotics (BLs) constituted 73.98% of all antibiotics and 28.21% of all drugs), anesthetics 1.8%, and radio-contrast media 0.31%. The majority of reactions were non-immediate 51.44%. The most commonly presenting symptoms among confirmed patients were urticaria 57.80%, angioedema 42.50%, respiratory symptoms 47.60%, and erythema 33.60%. Symptoms of anaphylaxis/anaphylactic shock were reported by 284 patients (44.00%) among confirmed cases. The most common method of diagnosis was a positive clinical history (54.4% in BLs and 90.45% in nonsteroidal anti-inflammatory drugs (NSAIDs). Among confirmed allergy to BLs, a positive ST was obtained in 31.9% of patients and positive DPT in 13.7%.Conclusion: NSAIDs and antibiotics, mainly BLs, are the most commonly implicated in confirmed allergy. In both confirmed and not confirmed/nonallergic cases, BLs are the most frequently involved DHRs which are mainly immediate, and the most commonly presenting symptoms were urticaria, angioedema, and respiratory symptoms. Diagnosis was confirmed mainly by a positive clinical history and when indicated, by positive STs or a DPT.

scholarly journals Macrolide Allergy in Children and the Negative Predictive Value of Drug Provocation Tests in Mild Index Reactions

2021 ◽  
Vol 19 (2) ◽  
pp. 92-99
Author(s):  
Betül Karaatmaca ◽  
Şule büyük yaytokgil ◽  
İlknur Külhaş Çelik ◽  
Özge Yılmaz Topal ◽  
Ersoy Civelek ◽  
...  
Keyword(s):  
Negative Predictive Value ◽  
Predictive Value ◽  
Drug Hypersensitivity ◽  
Provocation Test ◽  
Skin Tests ◽  
Provocation Tests ◽  
Patient Reported ◽  
Drug Provocation Test ◽  
Work Up ◽  
Drug Provocation Tests

ABSTRACT Objective: Macrolide allergy is rarely reported, and there is limited knowledge of hypersensitivity reactions (HRs) in children. The negative predictive value (NPV) of drug provocation tests (DPTs) for macrolides is unresolved. We aim to evaluate the clinical features of macrolide allergy in children, and determine the NPV of macrolide DPTs. Materials and Methods: Pediatric patients who were referred to our allergy department with a suspicion of macrolide allergy were evaluated by DPTs with or without prior skin tests between 2011 and 2020. Characteristics of the HRs and patients, the results of skin and DPTs were recorded. At least three months after evaluation of the patients with allergy work up, telephone interviews were performed. Patients were asked whether they had reused the suspected macrolide or not. Patients who reported HR during subsequent drug intake were invited for reevaluation. Results: A total of 160 children (161 reactions) (55.6% male) with a suspicion of macrolide allergy were enrolled for the study, and all children had a mild index reaction. The median age was 48 (18-102) months, and the median time between the suspected allergic reaction and allergy work-up was 3 (2-8) months. The most frequently reported suspected agent was clarithromycin, in 151 patients (94.4%). Macrolide allergy was confirmed in 8 (5%) patients. Only one patient reported skin eruptions upon reuse despite a negative DPT and he was invited to be reevaluated. A second DPT was performed resulting in urticarial lesions. The NPV was found to be 97.4% for negative DPT with macrolides. Conclusion: Confirmed macrolide allergy is rare in children, and DPTs are the gold standard to assess suspected macrolide allergy. The NPV of macrolide provocation tests seems to be high in children. Keywords: Children, drug hypersensitivity, drug provocation test, macrolide, negative predictive value

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