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1.

NEUROPATHY, HEREDITARY SENSORY AND AUTONOMIC, TYPE IID

MedGen UID:
860491
Concept ID:
C4012054
Finding
2.

Indifference to pain, congenital, autosomal recessive

Congenital indifference to pain is a rare autosomal recessive disorder characterized by the complete absence of pain perception typically associated with noxious stimuli. Affected individuals are aware of a stimulus, but have lost the ability to perceive pain. Most patients are hyposmic or anosmic. Other sensory modalities are unaffected, and there is an absence of overt autonomic symptoms. Sural nerve biopsy and nerve conduction velocity studies are normal (summary by Cox et al., 2006; and Goldberg et al., 2012). Hereditary sensory and autonomic neuropathy type IID (HSAN2D) is an autosomal recessive disorder characterized by congenital or childhood-onset distal loss of pain and temperature sensation as well as autonomic dysfunction accompanied by hyposmia, hearing loss, hypogeusia, and sometimes bone dysplasia. The phenotype is highly variable, even within families. Two Japanese families have been reported (summary by Yuan et al., 2013). For a discussion of genetic heterogeneity of HSAN, see HSAN1 (162400). [from OMIM]

MedGen UID:
344563
Concept ID:
C1855739
Disease or Syndrome

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