Rare diseases · Sign or symptom
EMG: chronic denervation signs
HP:0003444
What it means
Evidence of chronic denervation on electromyography.
This is a bundled term that is kept for convenience. It is preferable to annotate the precise clinical abnormalities observed.
Rare diseases that can present with this22
Very common80–99%
8- Autosomal dominant Charcot-Marie-Tooth disease type 2A2
- Autosomal dominant Charcot-Marie-Tooth disease type 2F
- Autosomal recessive axonal neuropathy with neuromyotonia
- Charcot-Marie-Tooth disease type 4C
- Lethal ataxia with deafness and optic atrophy
- Neurogenic arthrogryposis multiplex congenita
- Spinal muscular atrophy-Dandy-Walker malformation-cataracts syndrome
- TBCK-related encephalopathy-severe hypotonia-craniofacial dysmorphism syndrome
Common30–79%
9- Autosomal recessive axonal Charcot-Marie-Tooth disease due to copper metabolism defect
- Early-onset progressive encephalopathy-spastic ataxia-distal spinal muscular atrophy syndrome
- Farber disease
- Japanese encephalitis
- Metachromatic leukodystrophy, late infantile form
- O'Sullivan-McLeod syndrome
- PLA2G6-related neurodegeneration, infantile-onset
- Primary lateral sclerosis
- X-linked Charcot-Marie-Tooth disease type 2
The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.
Part of the broader category
Tracking symptoms like this for someone? Eleplan keeps symptoms, diagnoses, medications and every specialist in one plan.
Start free with EleplanThis page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.