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Review
. 2003 Sep-Oct;20(5):421-6.
doi: 10.1046/j.1525-1470.2003.20511.x.

Harlequin ichthyosis in association with hypothyroidism and juvenile rheumatoid arthritis

Affiliations
Review

Harlequin ichthyosis in association with hypothyroidism and juvenile rheumatoid arthritis

Yuin-Chew Chan et al. Pediatr Dermatol. 2003 Sep-Oct.

Abstract

Harlequin ichthyosis is a rare and severe congenital erythrodermic ichthyosis characterized at birth by hyperkeratotic plates covering the entire body, ectropion, eclabium, poorly developed ears, and contractures of the hands and feet. Two Chinese children, a 2-year-old boy and an 11-year-old girl, presented with these classic features as well as alopecia and loss of eyebrows and eyelashes. The boy was small for his age and was found to have hypothyroidism at the age of 18 months; he is currently on thyroxine replacement therapy. At 6 years of age, the girl developed symmetrical polyarthritis associated with positive rheumatoid factor and radiologic evidence of erosive arthritis, suggestive of juvenile rheumatoid arthritis. She received prednisolone, nonsteroidal anti-inflammatory drugs (NSAIDs), and subsequently methotrexate for her arthritis, with clinical and radiologic improvement. Early therapy with oral retinoids in both children accelerated shedding of the hyperkeratotic plates as well as improved ectropion and eclabium. There was no major adverse reaction to oral retinoids. The development of juvenile rheumatoid arthritis in survivors with harlequin ichthyosis has not been previously described. The use of prednisolone and NSAIDs in the girl did not affect the skin condition, but the addition of methotrexate led to a decrease in erythema. The association with autoimmune disease is probably coincidental. The psychosocial impact of this severe lifelong disease on the two families was enormous. Early retinoid therapy may improve the disorder and help increase survival rates. A multidisciplinary approach, including psychosocial support of the affected families, is vital in the management of this lifelong disease.

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