Medical terminology · Neurology
Dysautonomia, Familial
MeSH — National Library of Medicine · Retrieved 2026-10-13
An autosomal disorder of the peripheral and autonomic nervous systems limited to individuals of Ashkenazic Jewish descent. Clinical manifestations are present at birth and include diminished lacrimation, defective thermoregulation, orthostatic hypotension (HYPOTENSION, ORTHOSTATIC), fixed pupils, excessive SWEATING, loss of pain and temperature sensation, and absent reflexes. Pathologic features include reduced numbers of small diameter periphera
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Reference details
- MeSH descriptor
- D004402
- Vocabulary edition
- 2026
- Tree positions
- C10.177.575.300; C10.500.250.309; C10.574.500.493.250; C10.668.829.800.175.250; C16.131.666.310.309; C16.320.400.415.309
Scope and definition
An autosomal disorder of the peripheral and autonomic nervous systems limited to individuals of Ashkenazic Jewish descent. Clinical manifestations are present at birth and include diminished lacrimation, defective thermoregulation, orthostatic hypotension (HYPOTENSION, ORTHOSTATIC), fixed pupils, excessive SWEATING, loss of pain and temperature sensation, and absent reflexes. Pathologic features include reduced numbers of small diameter peripheral nerve fibers and autonomic ganglion neurons. (From Adams et al., Principles of Neurology, 6th ed, p1348; Nat Genet 1993;4(2):160-4)
Entry terms and synonyms
Dysautonomia, Familial
HSAN 3
Hereditary Sensory Neuropathy Type 3
Hereditary Sensory and Autonomic Neuropathy 3
HSAN III
Familial Dysautonomia
HSAN3
HSN-III
Neuropathy, Hereditary Sensory And Autonomic, Type III
HSAN Type III
Riley-Day Syndrome
Riley Day Syndrome
Hereditary-Sensory and Autonomic Neuropathy Type III
Hereditary Sensory and Autonomic Neuropathy Type III
Neuropathy, Hereditary and Autonomic, Type III
Dominant Hereditary Sensory Neuropathy, Type III
Hereditary Sensory Neuropathy, Dominant, Type 3
Hereditary Sensory Neuropathy, Dominant, Type III
Hereditary Sensory Neuropathy, Type 3, Dominant
HSAN (Hereditary Sensory and Autonomic Neuropathy) Type III
Type 3 Hereditary Sensory Neuropathy, Dominant
Type III Hereditary Sensory Neuropathy, Dominant
Classification tree positions
C10.177.575.300
C10.500.250.309
C10.574.500.493.250
C10.668.829.800.175.250
C16.131.666.310.309
C16.320.400.415.309
Sources and reuse
Medical vocabulary definition and classification record.
Retrieved: 2026-10-13. Text has been organized for reading; this import has not been independently reviewed by a clinician. It is not individualized medical advice.
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