Patch tests were introduced as a diagnostic tool in the late nineteenth century. Since then, they have improved considerably becoming what they are today. Patch tests are used in the diagnostic investigation of contact dermatitis worldwide. Batteries or series previously studied and standardized should be used in patch testing. The methodology is simple, but it requires adequate training for th...

Total hip and knee replacement surgery using metal alloy devices is common. Type IV allergic reactions to these implants occur, though infrequently. While uncommon, peri-implant metal allergic reactions may cause significant morbidity for the affected individual-including aseptic loosening, pseudotumor formation and frank device failure. It is challenging to predict who will have these reaction...

Disperse dyes are the most common contact sensitizers among textile dyes. The main aim of this study was to investigate the outcome of patch testing with a textile dye mix 6.6%. A total of 2,049 patients from Sweden and 497 from Belgium were tested with the mix, consisting of Disperse (D) Blue 35, D Yellow 3, D Orange 1 and 3, D Red 1 and 17, 1.0% each, and D Blue 106 and D Blue 124, 0.3% each....

This paper presents the design, construction, and testing of a high directivity circularly polarized small patch antenna for RFID Base Stations (Readers) operating in European UHF band. The designed optimized structure has 15cm ×15 cm × 0.6 compact size where -3dB beam angle is reduced by using slotted ring embedded patch. gain at 862 MHz 3.2 dBic with E H plain are 61.6º 65.2º respectively. Fi...

AIM The aim of the present study was to review the literature subsequent to 2001 for recent information on alternate vehicles for diagnostic patch testing. AIM Patch testing is a standard tool in dermatoallergology used in particular in the diagnostic process of allergic contact dermatitis. While petrolatum is employed in most cases, the way vehicles can influence results may not be neglected...

Materials used for total knee arthroplasty (TKA), may elicit an immune response whose role in the outcome of the arthroplasty is still unclear. The aim of this study was to evaluate the frequency of sensitization in patients who had undergone TKA, and the clinical impact of this event on the outcome of the implant. Ninety-four subjects were recruited, including 20 patients who had not yet under...

BACKGROUND No reports are available on allergic contact dermatitis in Saudi Arabia, although it seems to be a common skin problem. We attempted to explore certain clinical aspects in addition to the profile of sensitizing allergens in our area. As no standard panel for patch testing is available in our geographic region, we examined the suitability of the European Standard Series. METHODS Pat...

Removal of Scanpor® tape after occlusion for 2 days in patch testing sometimes elicits a localized erythematous skin reaction under the tape. Usually, a ‘cooling-off period’ of a few minutes allows the erythema to fade, ensuring that weakly positive patch test results are not missed. This reaction is commonly believed to be a form of dermographism, a physical form of urticaria caused by a light...

UNLABELLED Psoriasis is a common, chronic, genetically determined, T-cell-mediated inflammatory dermatosis. The aim of this study is to determine the frequency of delayed-type hypersensitivity to contact allergens in palmo-plantar psoriasis and their importance in provoking and/or perpetuating the same. MATERIALS AND METHODS 101 patients with different clinical forms of psoriasis were include...