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Dermatological powder as hidden cause of occupational allergy due to casein: a case report
  1. P Bonadonna1,
  2. G Senna1,
  3. G Passalacqua2
  1. 1Allergy Unit, Verona General Hospital, Verona, Italy
  2. 2Allergy & Respiratory Diseases, Dept of Internal Medicine, University of Genoa, Italy
  1. Correspondence to:
 Dr G Passalacqua, Allergy & Respiratory Diseases, Dept of Internal Medicine, Pad.Maragliano, L.go R.Benzi 10, 16132 Genoa, Italy; 
 giovanni.passalacqua{at}hsanmartino.liguria.it

Abstract

We report a case of occupational asthma due to hidden casein, contained in a dermatological powder. A 44 year old nurse reported the recent onset of rhinitis and asthma, clearly related to the work environment. Skin tests for food allergens revealed a positivity for milk proteins. The source of dispersed milk proteins in the work environment was found to be a dermatological formulation of an inert refreshing powder, used to treat excoriated areas in the elderly. Skin prick tests confirmed the positivity to casein and to the commercial product.

  • occupational allergy
  • asthma
  • milk proteins
  • casein
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