Persistence of contact allergy to chromium.
Forty-eight patients with a positive patch test to potassium dichromate 0.5% were retested after 4-7 years; 38 patients (79%) still had a positive patch test. Chromate allergy seems to be persistent. In 72% of the cases a history of occupational exposure to chromates could be proved.
D000328:Adult; D000485:Allergens; D002840:Chromates / Q000276:immunology*; D003877:Dermatitis, Contact / Q000175:diagnosis*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D009787:Occupational Medicine; D010328:Patch Tests; D011192:Potassium Dichromate / Q000276:immunology*
D000485:Allergens; D002840:Chromates; D011192:Potassium Dichromate