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Course: Ichthyosiform Rashes and Joint Pain in a Boy

CME Credits: 1.00

Released: 2021-09-08

A school-aged boy experienced generalized erythematous rashes for 4 years. Skin examination showed ichthyosiform brownish plaques on his lower extremities and multiple erythematous confluent papules and plaques on his trunk and face (, A and B). Topical steroid and pimecrolimus were administered, but their effects were limited. In addition, painful distal and proximal interphalangeal joints were noted for 2 years, and the patient could not clench his fists. Uveitis in both eyes was also diagnosed by an ophthalmologist. Microscopic examination of his hair showed no trichorrhexis invaginata or trichorrhexis nodosa. A skin biopsy specimen was obtained and submitted for further histopathologic analysis (, C and D).


Educational Objective
Based on this clinical scenario and the accompanying image, understand how to arrive at a correct diagnosis.


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