The familial form of pityriasis rubra pilaris is generally resistant to treatment and persists [MISCELLANEOUS] Caused by mutation in the caspase recruitment domain-containing protein 14 gene (CARD14, 607211.0006) [MOLECULAR BASIS] Nails, palms, and soles are spared in some patients [MISCELLANEOUS] Disease usually progresses in a cephalocaudal direction [MISCELLANEOUS] Male-to-female ratio of 3:2 in childhood cases [MISCELLANEOUS]
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