Distal hereditary motor neuropathy type 1

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Distal hereditary motor neuropathy type 1

ORPHA:139518Disease

Also called Autosomal dominant distal juvenile spinal muscular atrophy type 1 · dHMN1

What it is

Distal hereditary motor neuropathy type 1 is a rare neuromuscular disease characterized by slowly-progressive lower limb muscular weakness and atrophy, without sensory impairment. Additional clinical features may include pes cavus, hammertoe and increased muscle tone.

Key facts

Age of onset
Adolescent, Adult, Childhood
Inheritance
Autosomal dominant
Classified as
Disease

ICD-10 codes

G12.2filed under a broader ICD-10 category — shared with 25 other rare diseases

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Benefit programs to look at

Programs whose eligibility touches the same ICD-10 categories. Eligibility is decided by the administering agency, never by this page.

Cross-references

MESH C566675MONDO 0008451OMIM 182960UMLS C1866784

Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.

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