Contact Allergens Causing Hand Eczema in Ethnic Kashmiri Population: A Study of 7-years

Clinicoepidemiological and Patch Test Profile of Patients Attending the Contact Dermatitis Clinic of a Tertiary Care Hospital in North India: A 7-Year Retrospective Study

Introduction:

Allergic contact dermatitis (ACD) is a growing concern due to increased use of cosmetics and topical medications routinely and exposure to a large number of allergens on day-to-day basis. Patch testing is a reliable method for detecting the causative antigens in suspected cases.

Aims and Objectives:

To assess the demographic profile, pattern of ACD, and patch test profile of suspected cases of ACD attending contact dermatitis clinic of our department.

Materials and Methods:

It was a retrospective study in which all the data enrolled in the contact dermatitis clinic of our department over a 7-year period were analyzed. Patch testing was done using the Indian Standard Series of 20 antigens primarily, and other batteries were used depending on patient requirement and availability.

Results:

A total of 582 patients were enrolled in the contact dermatitis clinic over a period of 7 years. Hand eczema was the most common pattern seen in 268 cases followed by feet eczema, hand and foot eczema, facial eczema, forearm and leg eczema and photoallergic contact eczema. A total of 177 patients (30.4%) gave positive patch test results, with nickel sulfate being the most common allergen identified followed by potassium dichromate, cobalt sulfate, paraphenylenediamine, neomycin sulfate, and fragrance mix.

Conclusion:

Common allergens identified in our study were more or less similar to studies from other parts of India. However, due to the unique climate of the valley, the profile of parthenium sensitivity was low in our study when compared to the rest of the country.

Comparative Analysis of Epidemiological Data as Well as Quality of Life in Patients having Hand Eczema vis-à-vis Foot Eczema

Context:

Eczema of hand or foot though not life-threatening, not only impacts daily activities and work productivity adversely, but also impairs interpersonal relationships.

Materials and Methods:

Cross-sectional study of 100 outpatients of hand and foot eczema at a tertiary care teaching institute. Epidemiological data was collated and quality of life (QoL) evaluated by dermatology life quality index (DLQI) score.

Results:

Forty seven had hand eczema, 45; foot eczema and 8; both. Peak incidence of hand eczema (38.2%) was in fourth decade and foot eczema (33.3%), fifth decade. Hand eczema was more frequent in females (32; 68%) and foot eczema in males (32; 71.1%). Hand eczema was more common among housewives (14; 29.7%) and foot eczema among manual labourers (26; 57.7%). A persistent course was seen in foot (44; 83%) whereas recurrent course in hand eczema (21; 38.1%). Aggravation on contact with irritants/allergens was associated more with hand (32; 58.1%) than with foot eczema (18; 33.9%). Association with atopy was not significant. Substance abuse was associated more with foot eczema (25; 47.1%). Impairment in QoL was significantly higher in hand eczema (mean DLQI, 16.33) as compared to foot eczema (12.83).

Conclusion:

Hand eczema prevalent among females showed a high rate of recurrence whereas foot eczema in males, has a persistent course. Atopy is not significantly associated. The impairment in QoL is much greater in hand eczema as compared to foot eczema. The studies on comparative analysis of hand vis-à-vis foot eczema do not appear to exist in literature whereas studies of QoL impairment on hand eczema are abound.

European Surveillance System on Contact Allergies (ESSCA): Contact allergies in relation to body sites in patients with allergic contact dermatitis

Background

Analyses of the European Surveillance System on Contact Allergies (ESSCA) database have focused primarily on the prevalence of contact allergies to the European baseline series, both overall and in subgroups of patients. However, affected body sites have hitherto not been addressed.

Objective

To determine the prevalence of contact allergies for distinct body sites in patients with allergic contact dermatitis (ACD).

Methods

Analysis of data collected by the ESSCA (www.essca‐dc.org) in consecutively patch tested patients, from 2009 to 2014, in eight European countries was performed. Cases were selected on the basis of the presence of minimally one positive patch test reaction to the baseline series, and a final diagnosis of ACD attributed to only one body site.

Results

Six thousand two hundred and fifty‐five cases were analysed. The head and hand were the most common single sites that ACD was attributed to. Differences between countries were seen for several body sites. Nickel, fragrance mix I, cobalt and methylchloroisothiazolinone/methylisothiazolinone were the most frequent allergens reported for various body sites.

Conclusions

Distinct allergen patterns per body site were observed. However, contact allergies were probably not always relevant for the dermatitis that patients presented with. The possibility of linking positive patch test reactions to relevance, along with affected body sites, should be a useful addition to patch test documentation systems.

Patch Test as a Diagnostic Tool in Hand Eczema

INTRODUCTION

Allergic contact dermatitis is an important cause of hand eczema. Patch testing is the only investigation available to prove the diagnosis of allergic contact dermatitis. Exposures to allergens differ according to geographical, occupational, economic and social factors. Accordingly, patterns of allergic contact dermatitis differ in different parts of the world and different regions of the same country.

AIM

To study the causes of allergic contact dermatitis in adult patients with hand eczema with the help of patch testing.

MATERIALS AND METHODS

This was a cross-sectional study involving 54 hand eczema patients conducted between October 2013 and June 2015, at a tertiary care centre in Southern India. After a detailed history including history of occupational exposure and detailed examination, patch test was done on these patients with Indian standard series. The patches were removed after 48 hours. Another reading was taken after 72 hours. The readings were interpreted according to International Contact Dermatitis Research Group criteria and noted down. The data were summarized using mean and standard deviation for continuous variables and percentages for categorical and dichotomous variables. The test of association was done with Fisher's-exact test.

RESULTS

Hyperkeratotic hand eczema was the commonest morphological type (29%), followed by discoid eczema. Pompholyx was significantly more common among patients with history of atopy. A total of 20 patients (37%) showed patch test positivity to a total of 25 allergens. Nickel was the most common allergen (11.11%) followed by para-phenylenediamine (PPD) (7.4%). Nickel (6 patients) and cobalt (3 patients) were the common allergens among women, while potassium dichromate (3 patients) and parthenium (2 patients) were the common allergens among men. Potassium dichromate allergy was significantly more common among masons and PPD allergy was significantly more common among hair dye users. Discoid pattern of hand eczema was common among patients with allergy to potassium dichromate.

CONCLUSION

Majority of the cases of hand eczema are not due to allergic contact dermatitis. History of atopy is common among patients with pompholyx. Allergic contact dermatitis due to nickel remains a common cause of hand eczema.