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  1. Article ; Online: Drugs and the skin: A concise review of cutaneous adverse drug reactions.

    Del Pozzo-Magaña, Blanca R / Liy-Wong, Carmen

    British journal of clinical pharmacology

    2022  

    Abstract: Drug-induced skin disease or cutaneous adverse drug reactions (CADRs) are terms that encompass the clinical manifestations of the skin, mucosae and adnexa induced by a drug or its metabolites. The skin is the organ most frequently affected by drug ... ...

    Abstract Drug-induced skin disease or cutaneous adverse drug reactions (CADRs) are terms that encompass the clinical manifestations of the skin, mucosae and adnexa induced by a drug or its metabolites. The skin is the organ most frequently affected by drug reactions, which may affect up to 10% of hospitalized patients and occur in 1-3% of multimedicated patients. Most CADRs are mild or self-resolving conditions; however, 2-6.7% of could develop into potentially life-threatening conditions. CADRs represent a heterogeneous field and can be diagnostically challenging as they may potentially mimic any dermatosis. Currently, there are between 29-35 different cutaneous drug-reaction patterns reported ranging from mild dermatitis to an extensively burnt patient. The most frequently reported are maculopapular rash, urticaria/angioedema, fixed drug eruption and erythema multiforme. Less common but more severe patterns include erythroderma, drug reaction with eosinophilia and systemic symptoms, and Stevens-Johnson syndrome/toxic epidermal necrolysis spectrum. Almost any drug can induce a CADR, but antibiotics, nonsteroidal anti-inflammatory drugs and antiepileptics are the most frequently involved. Different mechanisms are involved in the pathogenesis of CADRs, although in some cases, these remain still unknown. CADRs could be classified in different ways: (i) type A (augmented) or type B (bizarre); (ii) immediate or delayed; (iii) immune-mediated or nonimmune-mediated; (iv) nonsevere or life-threatening; and (v) by their phenotype, including exanthematous, urticarial, pustular and blistering morphology. Recognizing a specific CADR will mostly depend on the ability of the physician to perform a detailed clinical examination, the proper description of the morphology of the skin lesions and supporting laboratory and/or skin biopsy findings.
    Language English
    Publishing date 2022-08-16
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 188974-6
    ISSN 1365-2125 ; 0306-5251 ; 0264-3774
    ISSN (online) 1365-2125
    ISSN 0306-5251 ; 0264-3774
    DOI 10.1111/bcp.15490
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Not every white spot is vitiligo.

    Del Pozzo-Magaña, Blanca R / Rieder, Michael J

    Paediatrics & child health

    2021  Volume 27, Issue 1, Page(s) 1–3

    Language English
    Publishing date 2021-08-31
    Publishing country England
    Document type Case Reports
    ZDB-ID 2106767-3
    ISSN 1918-1485 ; 1205-7088
    ISSN (online) 1918-1485
    ISSN 1205-7088
    DOI 10.1093/pch/pxab050
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: The role of

    Elzagallaai, Abdelbaset A / Abuzgaia, Awatif M / Del Pozzo-Magaña, Blanca R / Loubani, Eman / Rieder, Michael J

    Frontiers in pharmacology

    2022  Volume 13, Page(s) 945545

    Abstract: Background: ...

    Abstract Background:
    Language English
    Publishing date 2022-08-30
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2587355-6
    ISSN 1663-9812
    ISSN 1663-9812
    DOI 10.3389/fphar.2022.945545
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Drug reaction with eosinophilia and systemic symptoms (DRESS): A tertiary care centre retrospective study.

    Del Pozzo-Magaña, Blanca R / Rieder, Michael J / Garcia-Bournissen, Facundo / Lazo-Langner, Alejandro

    British journal of clinical pharmacology

    2022  Volume 88, Issue 9, Page(s) 4134–4141

    Abstract: Aims: Drug reaction with eosinophilia and systemic symptoms (DRESS) is a rare, drug-induced severe adverse reaction that usually occurs 3-6 weeks after initial exposure to certain drugs. It affects mainly adults and children to a lesser extent. Clinical ...

    Abstract Aims: Drug reaction with eosinophilia and systemic symptoms (DRESS) is a rare, drug-induced severe adverse reaction that usually occurs 3-6 weeks after initial exposure to certain drugs. It affects mainly adults and children to a lesser extent. Clinical features include fever, facial oedema, generalized skin rash, lymphadenopathy, haematological abnormalities and internal organ involvement. The objective was to investigate the clinical and laboratory features of patients with DRESS in our centre.
    Methods: We retrospectively describe and analyse 19 cases of DRESS whose diagnosis was based on the RegiSCAR criteria (≥6 points) that occurred from January 2009 to December 2019.
    Results: Patient age ranged from 4 to 76 years (4 children/15 adults); 10 were female (52.3%). The most common culprit drugs were antibiotics (74%) and anticonvulsants (21%). The most common comorbidities were epilepsy (26%) and hypertension (26%). All patients developed cutaneous manifestations and of those, 58% presented facial oedema. Liver function tests, urea/creatinine and troponin elevation were present in 74, 32 and 42%, respectively. The median time to develop the skin rash after the drug exposure was 3.7 weeks (interquartile range 2.4-4.2 wk). Eosinophilia (≥0.7 × 10
    Conclusion: DRESS is a serious condition with significant morbidity and mortality, which requires more research for a better understanding.
    MeSH term(s) Adolescent ; Adult ; Aged ; Angioedema ; Child ; Child, Preschool ; Drug Hypersensitivity Syndrome/diagnosis ; Drug Hypersensitivity Syndrome/epidemiology ; Drug Hypersensitivity Syndrome/etiology ; Edema/chemically induced ; Edema/diagnosis ; Edema/epidemiology ; Eosinophilia/chemically induced ; Eosinophilia/epidemiology ; Exanthema/chemically induced ; Exanthema/diagnosis ; Exanthema/epidemiology ; Female ; Humans ; Male ; Middle Aged ; Retrospective Studies ; Tertiary Care Centers ; Young Adult
    Language English
    Publishing date 2022-04-26
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 188974-6
    ISSN 1365-2125 ; 0306-5251 ; 0264-3774
    ISSN (online) 1365-2125
    ISSN 0306-5251 ; 0264-3774
    DOI 10.1111/bcp.15354
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Paediatric serum sickness-like reaction: A 10-year retrospective cohort study.

    Del Pozzo-Magaña, Blanca R / Abuzgaia, Awatif / Murray, Barbara / Rieder, Michael J / Lazo-Langner, Alejandro

    Paediatrics & child health

    2021  Volume 26, Issue 7, Page(s) 428–435

    Abstract: Background: Serum sickness-like reaction (SSLR) is an acute inflammatory condition affecting predominantly children. The pathophysiology remains unclear, but drugs are considered the main trigger.: Objective: The aim of this study was to describe the ...

    Abstract Background: Serum sickness-like reaction (SSLR) is an acute inflammatory condition affecting predominantly children. The pathophysiology remains unclear, but drugs are considered the main trigger.
    Objective: The aim of this study was to describe the clinical and laboratory features, triggers, and treatment modalities in children diagnosed with SSLR.
    Methods: We conducted a 10-year retrospective cohort study including all paediatric patients (0 to 18 years old) with query SSLR referred to the Adverse Drug Reactions Clinic at the Children's Hospital of Western Ontario. Diagnostic criteria included acute skin rash plus joint inflammation with or without fever.
    Results: We included 83 patients (47 females). Age ranged from 11 months to 12 years (mean 3.2 years). Amoxicillin was the trigger in 82.7% of patients. The mean time between the exposure to the triggering drug and the development of the symptoms was 8.5 days. Urticaria-like and Erythema multiforme-like lesions were present in 35% and 38.5% of the cases, respectively. Joint inflammation affecting hands/feet was present in 60%. Pruritus, lip/eye swelling, and fever were reported in 33, 31, and 45% of patients, respectively. The lymphocyte toxicity assay (LTA) showed incremental T-cell toxicity in 32 of 34 patients. Children that received treatment with antihistamines/nonsteroidal anti-inflammatory drugs (NSAIDs) plus oral steroids had a mean recovery time shorter than those treated only with antihistamines/NSAIDs (6 versus 8 days; P=0.09).
    Conclusions: In our study, SSLR was mostly triggered by amoxicillin and had a mean time presentation of 8.5 days. Further prospective and well-conducted studies are needed.
    Language English
    Publishing date 2021-04-03
    Publishing country England
    Document type Journal Article
    ZDB-ID 2106767-3
    ISSN 1918-1485 ; 1205-7088
    ISSN (online) 1918-1485
    ISSN 1205-7088
    DOI 10.1093/pch/pxab003
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Subcutaneous Fat Necrosis of the Newborn: A 20-Year Retrospective Study.

    Del Pozzo-Magaña, Blanca R / Ho, Nhung

    Pediatric dermatology

    2016  Volume 33, Issue 6, Page(s) e353–e355

    Abstract: Subcutaneous fat necrosis of the newborn (SFN) is a rare form of panniculitis that can be complicated by hypercalcemia and nephrocalcinosis. We conducted a 20-year retrospective cohort study of 30 patients to describe the clinical characteristics of SFN ... ...

    Abstract Subcutaneous fat necrosis of the newborn (SFN) is a rare form of panniculitis that can be complicated by hypercalcemia and nephrocalcinosis. We conducted a 20-year retrospective cohort study of 30 patients to describe the clinical characteristics of SFN and the prevalence of hypercalcemia and other complications. Hypoxia and therapeutic hypothermia (TH) seem to play an important role in the development of SFN. Hypercalcemia developed in 63% of patients, three of whom developed nephrocalcinosis. There is a need for well-controlled prospective studies to determine the natural history, prevalence, and incidence of complications of SFN.
    MeSH term(s) Algorithms ; Fat Necrosis/complications ; Fat Necrosis/pathology ; Female ; Humans ; Infant, Newborn ; Male ; Panniculitis ; Retrospective Studies ; Subcutaneous Fat/pathology
    Language English
    Publishing date 2016-11
    Publishing country United States
    Document type Journal Article
    ZDB-ID 605539-4
    ISSN 1525-1470 ; 0736-8046
    ISSN (online) 1525-1470
    ISSN 0736-8046
    DOI 10.1111/pde.12973
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Health-related quality of life in children with cutaneous adverse drug reactions.

    Del Pozzo-Magaña, Blanca R / Lazo-Langner, Alejandro / Rieder, Michael J

    Pediatric dermatology

    2017  Volume 34, Issue 6, Page(s) e341–e342

    Abstract: Adverse drug reactions (ADRs) are a common problem in children. Health-related quality of life in patients with such conditions has not been well studied. In this study we found that health-related quality of life is adversely affected in children who ... ...

    Abstract Adverse drug reactions (ADRs) are a common problem in children. Health-related quality of life in patients with such conditions has not been well studied. In this study we found that health-related quality of life is adversely affected in children who developed ADRs with cutaneous manifestations.
    Language English
    Publishing date 2017-11
    Publishing country United States
    Document type Journal Article
    ZDB-ID 605539-4
    ISSN 1525-1470 ; 0736-8046
    ISSN (online) 1525-1470
    ISSN 0736-8046
    DOI 10.1111/pde.13253
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Quality of life in children with adverse drug reactions: a narrative and systematic review.

    Del Pozzo-Magaña, Blanca R / Rieder, Michael J / Lazo-Langner, Alejandro

    British journal of clinical pharmacology

    2015  Volume 80, Issue 4, Page(s) 827–833

    Abstract: Aims: Adverse drug reactions are a common problem affecting adults and children. The economic impact of the adverse drug reactions has been widely evaluated; however, studies of the impact on the quality of life of children with adverse drug reactions ... ...

    Abstract Aims: Adverse drug reactions are a common problem affecting adults and children. The economic impact of the adverse drug reactions has been widely evaluated; however, studies of the impact on the quality of life of children with adverse drug reactions are scarce. The aim was to evaluate studies assessing the health-related quality of life of children with adverse drug reactions.
    Methods: We conducted a systematic review that included the following electronic databases: MEDLINE, EMBASE and the Cochrane Library (including the Cochrane Database of Systematic Reviews, the Database of Abstracts of Reviews of Effects, the Cochrane Controlled Trials Register and the Health Technology Assessment Databases).
    Results: Nine studies were included. Four of the studies were conducted in children with epilepsy; the rest of them involved children with chronic viral hepatitis, Crohn's disease, paediatric cancer and multiple adverse drug reactions compared with healthy children. Based on their findings, authors of all studies concluded that adverse drug reactions had a negative impact on the quality of life of children. No meta-analysis was conducted given the heterogeneous nature of the studies.
    Conclusions: To date, there is no specific instrument that measures quality of life of children with adverse drug reactions, and the information available is poor and variable. In general, adverse drug reactions have a negative impact on the quality of life of affected children. For those interested in this area, more work needs to be done to improve tools that help to evaluate efficiently the health-related quality of life of children with adverse drug reactions and chronic diseases.
    MeSH term(s) Child ; Drug-Related Side Effects and Adverse Reactions/psychology ; Humans ; Quality of Life
    Language English
    Publishing date 2015-07-02
    Publishing country England
    Document type Journal Article ; Review ; Systematic Review
    ZDB-ID 188974-6
    ISSN 1365-2125 ; 0306-5251 ; 0264-3774
    ISSN (online) 1365-2125
    ISSN 0306-5251 ; 0264-3774
    DOI 10.1111/bcp.12423
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Preliminary summary and reclassification of cases from the Pediatric Research of Management in Stevens-Johnson syndrome and Epidermonecrolysis (PROMISE) study: A North American, multisite retrospective cohort.

    Martinez-Cabriales, Sylvia / Coulombe, Jerome / Aaron, Michelle / Hussain, Sadaf H / Linggonegoro, Danny / Lara-Corrales, Irene / Barootes, Hailey / Brandling-Bennett, Heather / Covelli, Isabela / Kirkorian, Anna Yasmine / Shah, Nidhi / Castelo-Soccio, Leslie / McKenzie, Paige / Arkin, Lisa M / Heinze, Adam / Liy-Wong, Carmen / Travis, Nicole / Rieder, Michael / Del Pozzo-Magana, Blanca R /
    Schoch, Jennifer J / Monir, Reesa / Glick, Sharon A / Uwakwe, Laura / Skillman, Sarah / Hekman, Dan P / Lethebe, Brendan C / Ramien, Michele L

    Journal of the American Academy of Dermatology

    2023  Volume 90, Issue 3, Page(s) 635–637

    MeSH term(s) Child ; Humans ; Retrospective Studies ; Stevens-Johnson Syndrome/therapy ; Research ; North America
    Language English
    Publishing date 2023-11-04
    Publishing country United States
    Document type Journal Article
    ZDB-ID 603641-7
    ISSN 1097-6787 ; 0190-9622
    ISSN (online) 1097-6787
    ISSN 0190-9622
    DOI 10.1016/j.jaad.2023.08.112
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: A systematic review of treatment of drug-induced Stevens-Johnson syndrome and toxic epidermal necrolysis in children.

    Del Pozzo-Magana, Blanca R / Lazo-Langner, Alejandro / Carleton, Bruce / Castro-Pastrana, Lucila I / Rieder, Michael J

    Journal of population therapeutics and clinical pharmacology = Journal de la therapeutique des populations et de la pharmacologie clinique

    2011  Volume 18, Page(s) e121–33

    Abstract: Stevens-Johnson (SJS) and Toxic Epidermal Necrolysis (TEN) are two uncommon mucocutaneous diseases usually considered as severe drug reactions and are characterized by different grades of epidermal necrosis. Several treatment modalities have been ... ...

    Abstract Stevens-Johnson (SJS) and Toxic Epidermal Necrolysis (TEN) are two uncommon mucocutaneous diseases usually considered as severe drug reactions and are characterized by different grades of epidermal necrosis. Several treatment modalities have been proposed with variable results but the lack of controlled studies makes difficult to analyze them objectively especially in children. All publications describing management for SJS and TEN in children were searched in MEDLINE, EMBASE, and the Cochrane Library. Reports included were divided in two categories: A, studies with 5 or more patients and observational studies; and B, reports with less than 5 patients. A formal meta-analysis was not feasible. Description was made using central tendency measures. From 1389 references only 31 references with a total of 128 cases were included, 88 category A and 40 category B. The 4 main treatment modalities were: intravenous immunoglobulin (IVIG), steroids (prednisolone, methylprednisolone, dexamethasone), dressings with or without surgical debridement, and support treatment alone. Miscellaneous treatments: Of 12 patients, 3 received ulinastatin, 4 patients plasmapheresis, 2 patients IV pentoxifylline and the last three patients received different treatment each (cyclosporine, methylprednisone/G-CSF and methylprednisolone/IVIG). Patients receiving IVIG and steroids showed similar findings while patients treated with dressing and support treatment alone, reported both longer time to achieve remission and hospitalization stays and appear to be associated with more complications and deaths. There is scant quality literature about management of SJS and TEN in children. Steroids and IVIG seem to improve the outcome of SJS and TEN patients but results from different reports are variable. Patients treated only with care support seem to have higher morbidity and mortality. Further studies are necessary to define optimal management.
    MeSH term(s) Adolescent ; Child ; Humans ; Stevens-Johnson Syndrome/chemically induced ; Stevens-Johnson Syndrome/therapy
    Language English
    Publishing date 2011-03-21
    Publishing country Australia
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review ; Systematic Review
    ISSN 2561-8741
    ISSN (online) 2561-8741
    Database MEDical Literature Analysis and Retrieval System OnLINE

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