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The patient was a young girl with an eruption of about three weeks' duration. It first appeared as a single lesion on the abdomen and then spread over the entire body. The lesions produced considerable itching; they were slightly scaly and clear up in the center, leaving a brownish discoloration.
Dr. Bronson said that in the treatment of pityriasis rosea he has obtained the best results from germicidal applications. He asked the opinion of the members as to the parasitic nature of this disease.
Dr. Fox said that... he did not regard these cases as parasitic in origin.
Dr. Bulkley said... that it had always impressed him as being of microbic origin.
Dr. Lustgarten said that... everything tends to show that it is a parasitic disease.
Dr. Sherwell said he had never been able to associate pityriasis rosea with a parasitic origin.
Dr. Piffard said he was inclined to regard
Fordyce . A Case of Pityriasis Rosea. Arch Dermatol. 1996;132(9):1019. doi:10.1001/archderm.1996.03890330033006