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Medicina y Seguridad del Trabajo

versión On-line ISSN 1989-7790versión impresa ISSN 0465-546X


AMARO, Patricio et al. Protein Contact Dermatitis, a Little-Known Entity as Occupational Disease. About a case. Med. segur. trab. [online]. 2018, vol.64, n.253, pp.402-406. ISSN 1989-7790.


protein contact dermatitis is a chronic and recurrent, uncommon condition, usually in context of occupational pathology.


A case of protein contact dermatitis is reported in an adult subject.


Male patient 42 years, with no significant medical records. He works full time as a baker in a supermarket since 5 years. He has nonpruritic lesions of 20 days of evolution, characterized by erythematous plaques and papules, scaly on both forearms, accompanied by itching during the course of their job (picture No. 1 and No. 2). Standard patch test is positive to nickel. Patch test positive to triclosan soap, mold release and wheat flour. Negative Prick test and positive specific IgE to wheat flour in moderate degree. These findings are consistent with a diagnosis of protein contact dermatitis.


By many dermatologists it is a underdiagnosed pathology, so a high rate of suspicion is crucial. It is postulated that it would arise by a HS combination of type I and IV. Many workers are exposed to contact with proteins; food handlers are the most affected workers. Clinically are characterized by erythematous plaques associated with intense itching at the areas in contact with the protein. The study should be done primarily with type I HS tests (prick test and specific IgE). The patch test is negative. The treatment involves avoiding the contact with protein and topical treatment (topical corticosteroids or calcineurin inhibitors) in order to lower inflammation.


clinical case of a patient with protein contact dermatitis is presented, diagnosed by anamnesis and skin and non-skin allergological tests, emphasizing the importance of an accurate and proper diagnosis. The PCD causes a significant negative impact for the worker with prolonged inactivity and adjustments in the workplace.

Palabras clave : Protein contact dermatitis; diagnostic; occupational disease; treatment.

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