Occupational contact urticaria and rhinoconjunctivitis from dog's milk in a veterinarian

We report the case of a 46-year-old veterinarian who developed rhinoconjunctivitis and contact urticaria (CU) on his hands and forearms after contact with dog's milk. Prick tests results revealed a positive reactions to Parietaria pollens, Dermatophagoides farinae and D.pteronyssinus, dander of cat, grass, olive (+++), and to undiluted dog's milk (++++). Control prick tests with dog's milk performed in 5 healthy veterinarians were negative. We consider it important to take into account the possibility that dog's milk may be the aetiological agent of CU in veterinarians.