Batch-consciousness in dermatologic management.

The chemical ingredients can vary between batches of industrial products. That means that the sensitizing capacity is also variable. This should be considered in taking histories, performing patch testing and analyzing chemicals.     

Contact dermatitis from the epoxy resins tetraglycidyl-4,4''- methylene dianiline and o-diglycidyl phthalate in composite material

An outbreak of dermatitis occurred in an aircraft factory using epoxy resin composite material. Of 25 operatives, 14 gave positive patch test reactions to the composite material and/or diglycidylether of bisphenol A (DGEBA), tetraglycidyl-4,4'-methylene dianiline (TGMDA), and o-diglycidyl phthalate. This report seems to be the first to demonstrate contact allergy to the two last mentioned epoxy resins. The diglycidylether of bisphenol A used in routine test series picked up only 3 cases of 12 tested.     

Allergic contact stomatitis from gold dentures

Allergic reactions to metallic gold are rare and allergic contact stomatitis due in gold dentures is extremely rare. Two cases described below showed allergic contact reactions to gold dentures.