Abstract
This chapter on dry skin disorders describes a range of mainly genetic dermatoses whose predominant feature is dry scaly skin. It excludes conditions such as eczema where dry skin is a secondary clinical sign. The underlying mechanism of dry scaly skin is briefly discussed and an algorithm points to possible diagnoses. The focus is on the genetic ichthyoses, defined as congenital, lifelong, generalized dry and scaly skin. The common ichthyoses are non-inflammatory (ichthyosis vulgaris and X-linked recessive ichthyosis) but there are several inflammatory ichthyoses, some associated with fragile skin (blistering) and several with multisystem complications, such as Netherton syndrome. Salient features of each are reviewed with illustrations of selected cases and management is outlined. Two important neonatal presentations, collodion baby and harlequin ichthyosis, are described.
Published Version
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