Patch testing with components of water-based metalworking fluids: results of a multicentre study with a second series

Background: Although many allergens in metalworking fluids (MWF) are identified, there are still some MWF components, which are not sufficiently investigated concerning their sensitizing properties. Objectives: To investigate sensitization to 10 frequently used MWF components, which are not part of the established MWF test series, in metalworkers with suspected occupational dermatitis due to MWF. Patients/Methods: Oleyl alcohol, myristyl alcohol, dimethylolurea, 4,4'-methylenebis morpholine, imazalil, 1-amino-2-propanol (monoisopropanolamine; MIPA), 2-amino-2-ethyl-1,3-propanediol (AEPD), 2,5-bis(n-octyldithio)-1,3,4-thiadiazole, zinc alkyl dithiophosphate and dibenzyl disulfide have been p…

Patch testing in children--recommendations of the German Contact Dermatitis Research Group (DKG).

Summary Allergic contact dermatitis occurs frequently in children. Patch testing is needed to identify the responsible allergens and should be performed in children. We recommend a panel of 12 contact allergens as a standard series in children from 6–12 years. Four additional contact allergens should be tested in case of a positive history or suggestive clinical picture. For patch testing in children, the allergens should be applied for 24 hours and the readings should be performed at 48 and 72 hours. Standardized patch testing makes it possible to systematically investigate allergic contact dermatitis and identify relevant allergens in children.

Allergen-Immuntherapie in der aktuellen COVID-19-Pandemie – ein Positionspapier von ARIA, EAACI, AeDA, GPA und DGAKI (Kurzversion) – Positionspapier der deutschen ARIA-GruppeA in Kooperation mit der österreichischen ARIA-GruppeB, der schweizerischen ARIA-GruppeC, dem Ärzteverband Deutscher Allergologen (AeDA)D, der Deutschen Gesellschaft für Allergologie und Klinische Immunologie (DGAKI)E und der Gesellschaft für Pädiatrische Allergologie (GPA)F in Kooperation mit der AG Klinische Immunologie, Allergologie und Umweltmedizin der DGHNO-KHCG und der Europäischen Akademie für Allergologie und Klinische Immunologie (EAACI)H

Therapiemöglichkeiten bei der IgE-vermittelten Nahrungsmittel-Allergie

Erst nachdem die klinische Relevanz einer Nahrungsmittelallergie eindeutig nachgewiesen ist, erfolgt die therapeutische Intervention. Hierbei stellt die Karenz den wichtigsten Pfeiler dar. Wegen der Komplexitat der Nahrungsmittelallergie mussen die jeweiligen Karenzempfehlungen jedoch immer individuell erarbeitet werden. Die Voraussetzungen hierzu schafft die Ernahrungstherapie, die gleichzeitig die bedarfsdeckende Ernahrung im Blick hat. Die Ernahrungstherapie erfolgt in enger Abstimmung zwischen Arzt und allergologischer Ernahrungsfachkraft. Fehlernahrung durch einseitige Diaten muss aufjeden Fall vermieden werden. Nach ein- bis zweijahriger Allergenkarenz kann eine Reexposition erwogen w…

Keine Empfehlung für IgG- und IgG4-Bestimmungen gegen Nahrungsmittel

Chromated metal products may be hazardous to patients with chromate allergy.

Background:  Hidden allergen exposure may contribute to persistence and relapse of chromate dermatitis. According to case reports, chromated metal products, such as screws, fittings, etc., may be relevant allergen sources for patients sensitized to chromate. Objectives:  To examine concomitant patch test reactivity to potassium dichromate 0.5% petrolatum (pet.) and three different types of chromated metal rings. Patients/Methods:  Patients with proven or suspected chromate allergy were patch tested with potassium dichromate 0.5% pet. and three different types of chromated metal rings (yellow, olive, and black). Hexavalent chromium Cr(VI) release from the patch tested rings was chemically an…

Late reactions to patch test preparations with reduced concentrations of p-phenylenediamine : a multicentre investigation of the German Contact Dermatitis Research Group

Background. p-Phenylenediamine (PPD) 1% in petrolatum has been shown in a prospective study to elicit late reactions in 1.5% of routine patch tests, which may be indicative of patch test sensitization. Objectives. To assess the frequency of late reactions to reduced PPD patch test concentrations. Methods. In 1838 patients, PPD was tested at three concentrations (0.5% pet., group I; 0.4% pet., group II; and 0.35% pet., group III). Patch tests were read on D1 (D2) to D3 (D4); additional late readings were performed on D7, D14, and D21. Patients who were not able to return for all scheduled late readings were telephoned on D7, D14, and D21, and questioned about a reaction at the patch test sit…

Hauttestungen mit Nahrungsmittelallergenen

Hauttestungen haben einen zentralen Stellenwert in der Abklarung von Sensibilisierungen bei Nahrungsmittelallergien. Insbesondere der Pricktest stellt eine Routinemethode dar. Allerdings komplizieren instabile Allergene und das Fehlen standardisierter Extrakte das diagnostische Vorgehen bei Verdacht auf eine Nahrungsmittelallergie. Deswegen ist man nach wie vor auf einen Prick-zu-Prick-Test mit nativen Lebensmitteln angewiesen. Indikationen und Kontraindikationen fur eine Hauttestung mit Nahrungsmittelallergenen unterscheiden sich nicht wesentlich von anderen Allergien. Vorsicht ist bei Zustand nach schwerer anaphylaktischer Reaktion und bei bekannter hoher allergener Potenz der Nahrungsmit…

Patch testing with components of water-based metalworking fluids

Water-based metalworking fluids (MWFs) may cause both irritant and allergic contact dermatitis. Several well-known MWF allergens are available for patch testing, but considering the wide variety of possible components used in MWF, our diagnostic arsenal covers only a small part of potential allergens. We therefore selected 13 frequently used MWF components that might be sensitizers and had not yet been tested routinely. In 5 centres, 233 dermatitis patients with present or past occupational exposure to MWF were patch tested with this and other panels. Only 7 patients showed positive reactions to the study panel. Allergic reactions to the emulsifier diglycolamine [syn. 2-(2-aminoethoxy) etha…

Survival trends and predictors of mortality in severe pelvic trauma: estimates from the German Pelvic Trauma Registry Initiative.

Abstract Study objective To determine longitudinal trends in mortality, and the contribution of specific injury characteristics and treatment modalities to the risk of a fatal outcome after severe and complex pelvic trauma. Methods We studied 5048 patients with pelvic ring fractures enrolled in the German Pelvic Trauma Registry Initiative between 1991 and 1993, 1998 and 2000, and 2004 and 2006. Complete datasets were available for 5014 cases, including 508 complex injuries, defined as unstable fractures with severe peri-pelvic soft tissue and organ laceration. Multivariable mixed-effects logistic regression analysis was employed to evaluate the impact of demographic, injury- and treatment-a…