A retrospective study of 2585 patients patch tested with the European standard series in Hong Kong (1995–99)

Abstract

This study provides a profile of allergens responsible for allergic contact dermatitis in the public dermatology service in Hong Kong. A prospective study, using a larger panel of allergens, involving patients from both the private and public sectors, would provide a more comprehensive profile of contact allergens in Hong Kong and contribute to the establishment of a local standard series.

A retrospective study of patch tests in Chongqing, China from 2004 to 2009

“…The female preponderance in our positive patch test results was in line with most series (7), and could be attributed to the large number of nickel-sensitized women (632 of a total of 1090 patients with nickel sensitization). In addition, with the use of logistic regression, seven risk factors favouring a positive patch test reaction were identified, with the effect of each given by its OR (Table 4).…”

“…Nickel sulfate is the most common allergen (59.8% of all patients) in Chongqing, as in most other areas in China (5–7) and most Western and Asian series (8, 9). Logistic regression of the data further showed that nickel sensitization was more common in female patients aged ≤40 years or atopic patients, who normally present with upper limb and trunk involvement instead of lower limb involvement.…”

“…For example, nickel sulfate was the most common allergen (22.1%) in Beijing, followed by fragrance mix (15.5%), and p-phenylenediamine (12.8%) (5), whereas nickel sulfate (16%) and potassium dichromate (11%) were the most common allergens in Shanghai (6). Nickel sulfate (24.4%), fragrance mix (13.7%) and cobalt chloride (8.7%) were the three most common allergens in Hong Kong (7). About 66.2% of patients had one or more positive responses, but only 40.5% of the positive results had current relevance.…”

Patch testing in hand eczema: a cross-sectional study from a teaching hospital of North India

“…18 Nickel sulphate was also the commonest sensitizers in various international studies. 7,[19][20][21] Compared to general population, housewives, farmers, drivers, mechanics, engineers as expected have high frequency of allergic hand eczemas as they are more exposed to allergens. Similar findings were seen in number of studies.…”

Prevalence of benzocaine and lidocaine patch test sensitivity in Denmark: temporal trends and relevance

“…An older report from Australia revealed that 0.3-0.7% of Australian dermatitis patients had lidocaine allergy (8,23). Among 2585 dermatitis patients recently tested in Hong Kong, 1.4% had benzocaine allergy (24).…”