Chapter 641 Ectodermal Dysplasias
Anhidrotic (Hypohidrotic) Ectodermal Dysplasia
The syndrome known as anhidrotic ectodermal dysplasia manifests as a triad of defects: partial absence (hypohidrosis) or complete absence of sweat glands, anomalous dentition, and hypotrichosis. There are 4 recognized types of anhidrotic ectodermal dysplasia (Table 641-1). The X-linked form is most common.
TYPE | INHERITANCE | GENE DEFECT |
---|---|---|
ED-1 | X-linked recessive | Ectodysplasin A (EDA) |
ED-anhidrotic | Autosomal recessive | Ectodyplasin A anhidrotic receptor (EDAR) |
EDAR-associated death gene (EDARADD) | ||
ED-3 | Autosomal dominant | EDAR |
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