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1.
Risk factors for systemic reactions in typical cold urticaria : results from the COLD-CE study
Mojca Bizjak, Mitja Košnik, Dejan Dinevski, Simon Francis Thomsen, Daria Fomina, Elena Borzova, Kanokvalai Kulthanan, Raisa Meshkova, Dalia Melina Ahsan, Mona Al-Ahmad, Jovan Miljković, Dorothea Terhorst, Marcus Maurer, 2022, izvirni znanstveni članek

Povzetek: Background. Cold urticaria (ColdU), i.e. the occurrence of wheals or angioedema in response to cold exposure, is classified into typical and atypical forms. The diagnosis of typical ColdU relies on whealing in response to local cold stimulation testing (CST). It can also manifest with cold-induced anaphylaxis (ColdA). We aimed to determine risk factors for ColdA in typical ColdU. Methods. An international, cross-sectional study COLD-CE was carried out at 32 urticaria centers of reference and excellence (UCAREs). Detailed history was taken and CST with an ice cube and/or TempTest® performed. ColdA was defined as an acute cold-induced involvement of the skin and/or visible mucosal tissue and at least one of: cardiovascular manifestations, difficulty breathing, or gastrointestinal symptoms. Results. Of 551 ColdU patients, 75% (n=412) had a positive CST and ColdA occurred in 37% (n=151) of the latter. Cold-induced generalized wheals, angioedema, acral swelling, oropharyngeal/laryngeal symptoms, and itch of earlobes were identified as signs/symptoms of severe disease. ColdA was most commonly provoked by complete cold water immersion and ColdA caused by cold air was more common in countries with a warmer climate. Ten percent (n=40) of typical ColdU patients had a concomitant chronic spontaneous urticaria (CSU). They had a lower frequency of ColdA than those without CSU (4% vs 39%, p=0.003). We identified the following risk factors for cardiovascular manifestations: previous systemic reaction to a Hymenoptera sting, angioedema, oropharyngeal/laryngeal symptoms, and itchy earlobes. Conclusion. ColdA is common in typical ColdU. High-risk patients require education about their condition and how to use an adrenaline autoinjector.
Ključne besede: urticaria, risk factors, epinephrine - therapeutic use, self administration, intramuscular injections - methods, cold urticaria, systemic reactions, adrenaline autoinjector
Objavljeno v DiRROS: 31.08.2022; Ogledov: 141; Prenosov: 49
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2.
Cold urticaria : what we know and what we do not know
Natalya Maltseva, Elena Borzova, Daria Fomina, Mojca Bizjak, Dorothea Terhorst, Mitja Košnik, Kanokvalai Kulthanan, Raisa Meshkova, Simon Francis Thomsen, Marcus Maurer, 2020, izvirni znanstveni članek

Povzetek: Cold urticaria (ColdU) is a common form of chronic inducible urticaria characterised by the development of wheals, angioedema or both in response to cold exposure. Recent research and guideline updates have advanced our understanding and management of ColdU. Today, its pathophysiology is thought to involve the cold-induced formation of autoallergens and IgE to these autoallergens, which provoke a release of proinflammatory mediators from skin mast cells. The classification of ColdU includes typical and atypical subtypes. We know that cold-induced wheals usually develop on rewarming and resolve within an hour and that anaphylaxis can occur. The diagnosis relies on the patient's history and cold stimulation testing. Additional diagnostic work-up, including a search for underlying infections, should only be done if indicated by the patient's history. The management of ColdU includes cold avoidance, the regular use of nonsedating antihistamines, and the off-label use of omalizumab. However, many questions regarding ColdU remain unanswered. Here, we review what is known about ColdU, and we present important unanswered questions on the epidemiology, underlying pathomechanisms, clinical heterogeneity and treatment outcomes. Our aim is to guide future efforts that will close these knowledge gaps and advance the management of ColdU.
Ključne besede: urticaria, cryopyrin-associated periodic syndromes, cold-induced urticaria, familial cold autoinflammatory syndrome, cold stimulation testing, wheals, cryoglobulinemic vasculitis, cryoglobulins
Objavljeno v DiRROS: 14.12.2020; Ogledov: 913; Prenosov: 247
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