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A short review on present-day knowledge of cortisone allergy is given and a case of a contact allergy to prednisone and prednisolone reported. The patch tests show that the strength of a positive reaction is influenced by the vehicle in which the cortisone is dissolved. This presents a possibility for further research with the aim of improving the ointment bases.
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P. Gutzwiller (2009) studied this question.
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