TO STUDY PREVALENCE OF PATCH TEST RESULTS IN POTTERY WORKERS WITH SUSPECTED CONTACT DERMATITIS WITH INDIAN STANDARD SERIES AND 'AS IS' PATCH TEST

Dr Swagata Arvind Tambe, Dr Hemangi Jerajani

Abstract


BACKGROUND: Pottery making is a traditional family business in India. Prevalence of contact dermatitis (ACD) in
potters is estimated to be 5-10%.
AIMS: To study the prevalence of allergic contact dermatitis in potters and to study prevalence of patch test results with Indian standard series
and 'as is' patch test in the symptomatic potters.
METHODS AND MATERIAL: Potters with or without history of allergic contact dermatitis were included. History and clinical examination
were followed by patch testing with Indian standard series and with the clay material 'as is' in symptomatic potters. Results were studied and
correlated with demographic profile, history of symptoms, direct or indirect contact with the clay.
RESULTS: Thirty-one potters participated in the study. Most of the potters (9/31) were in 4th decade with M:F ratio of 1:1.5. Twelve of 31
potters were working in this occupation since 11 to 20 yrs and 9 of 31 potters had daily contact with clay was for 10 to 12 hrs. Itching, scaling,
oozing were common complaints. Forearm was the most commonly affected site. Out of 31 potters 22 were symptomatic. Patch test with
universal series was positive in 72.72% of symptomatic patients. While 'as is' patch test was positive in 45.45 % patients.
CONCLUSIONS: Patch testing with Indian standard series and 'as is' with clay material can be an effective method of diagnosing ACD in
potters.


Keywords


Allergic contact dermatitis, potters, pottery material, clay

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References


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Wahlberg J. Lindberg M, Patch Testing. In: Frosch PJ, Menne T, Lepoittevin JP,editors. Contact Dermatitis. 4th ed. Germany: Springer; 2006. p.365-390.

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Wilkinson SM, Heagerty AH, English JS. Hand dermatitis in the pottery industry. Contact Dermatitis 1992;26:91-4.


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