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Dr AK Bajaj, Allahabad 23 January 2019

30% of nickel sensitivity and 60% of chrome sensitivity is unsuspected.
Common allergens in India - nickel sulfate.
Gold and palladium are now part of standard screening allergen in US.
GOLD - contact allergen of year 2001.
Role of patch test in implants - not indicated routinely. Lymphocyte transformation test is believed to be better than patch test.
Cosmetic allergens in India - Fragrance component allergens (51%), Preservatives (39%), PPD (21%), Cetrimide (12%), Tertiary butyl hydroquinone (12%).
Cetrimonium is antiseptic and surfactant, used widely in hair conditioning products.
Gallate mix includes dodecyl gallate, octyl gallate and propyl gallate; used as preservatives in lipsticks, cleansers, skin lightening cream, conditioners and makeup products.
In Fair and lovely - thimerosal was commonest allergen.
Contact dermatitis to slime - slime is a homemade stretchy play material created by mixing together household items such as school glue, borax, shaving cream and contact lens solution; allergen is methylchloroisothiazolinone/methylisothiazolinone.

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