The epicutaneous patch testing is regarded as the best method of diagnosis for allergic contact dermatitis (ACD). Patch tests can be used to confirm a suspected allergic contact dermatitis and either to recommend avoidance of particular products or to recommend alternative products in a particular patient. It is based upon re-exposing the skin of the patient to suspected allergens under control...

Introduction:: Recent reports have suggested that gastroesophageal reflux disease (GERD) is link with cow’s milk allergy (CMA) in children. The aim of this study was to determine the frequency of CMA in young children with GERD.Materials and Methods: This cross- sectional study included 33 children (median age, 2.93±1.90 years) with GERD according to a valid gastroesophageal reflux questionnair...

In March 1955, a comparative study of the results of the (Mantoux) intracutaneous tuberculin test, and the patch test, (Vollmer) was carried on in two Los Angeles schools. The purpose of this study was to determine whether or not the patch should be substituted for the intracutanous test, allowing greater ease of administration, decreased expense, and lessened work load. The schools chosen were...

One of the most important adverse consequences of patch testing is active sensitization, when subjects previously not allergic become sensitized to one or more of the test chemicals by the test procedure. The allergic test reaction then shows up about 10 or more days (late reaction) after the test application. Sometimes, however, late reactions are seen without active sensitization being presen...

The aim of this study was to investigate the validity of self-patch testing for nickel allergy, in order to determine a cost-effective method for surveillance of the prevalence of nickel allergy. Population-based study including patch testing is the most reliable method to study the prevalence of allergy, but it is expensive and has logistical problems. A total of 191 dermatology patients refer...

It is tacitly assumed that a positive patch test reaction is not affected by adjacent negative tests. However, despite its fundamental importance for the interpretation of test reactions this assumption has not been proven. To test this assumption, special TRUE-test strips were prepared containing placebo, nickel sulphate and fragrance mix as the only allergens, separated by distances of 1 cm a...

BACKGROUND Patch tests are considered safe but adverse reactions have been reported. OBSERVATIONS A case of acute generalized exanthematous pustulosis (AGEP) provoked by a patch test with acetaminophen is described. Of special interest are the negative patch test results obtained with the offending drug. The case is discussed against the background of the putative mechanisms of AGEP and the r...

OBJECTIVE To present and interpret results of patch testing with the Mayo Clinic standard series over 5 years. DESIGN Retrospective study. A standardized patch testing technique was used. Data were recorded on a standardized computer program from January 1, 2001, to December 31, 2005, and analyzed. SETTING Tertiary referral center. PATIENTS Patients who were referred for patch testing. ...

Patch test of dental alloys was conducted on dentists in the Department of Prosthetic Dentistry, Hiroshima University School of Dentistry. The positive rate of the first patch test in the test group was 47.1%, and that in the control group was 10.0%, showing a large difference between the two groups. Furthermore, a second patch test was conducted on those who showed a positive response together...

Long-lasting allergic patch test reactions (LLAPTR) are those in which the clinical features of palpable erythema are still present at the site of a positive allergic patch test reaction 14 or more days after application of the allergen. LLAPTR have been described for a wide range of contact allergens, many of these included in the baseline patch test series. LLAPTR are far from uncommon; they ...