CASE PRESENTATION

A male patient, 28 years of age, was admitted to our hospital because of recurrent papules, nodules, and intense itching on the trunk and extremities for 12 years. The patient had visited another hospital 12 years ago (in 2010). He was diagnosed with EBP based on examination results from other hospitals (Figure1A) and herpetic autoantibody test results.
The patient had visited other hospitals several times due to disease relapse, but the outcomes were often unsatisfactory (Figure2). The patient came to our hospital on August 2,2021. The physical examinations revealed multiple reddish-brown hemispherical mung bean-to-soybean-sized nodules were symmetrically distributed on the trunk and extremities, densely packed in patches, some of which were anabrotic and crustosus due to scratching (Figure 1C and 1D). Laboratory test results indicated routine blood and urine test with normal liver and kidney function, blood function, blood electrolytes, and blood sedimentation were normal.