Morvan syndrome
Findings
No curated finding names Morvan syndrome yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
Morvan syndrome is a rare, life-threatening, acquired neurologic disease characterized by neuromyotonia, dysautonomia and encephalopathy with severe insomnia. Signs involving central (e.g. hallucinations, confusion, amnesia, myoclonus), autonomic (e.g. variations in blood pressure, hyperhidrosis) and peripheral (e.g. painful cramps, myokymia) hyperactivity, as well as systemic manifestations (such as weight loss, pruritus, fever), are reported. Thymoma is present in some cases.
Definition from the Mondo Disease Ontology (MONDO:0008718), read 2026-09-29. CC BY 4.0.
Features
1 feature
What the disease is reported to present with, and how often among people who have it — never how often a feature means the disease. HPO, annotations 2026-09-02.
- Anti-CASPR2HPOHP:5000005
- Frequent (30% to 79% of cases)
Where it sits
- A kind of
Other names
2 names
Resolves to: Morvan syndrome
- Also called
- limbic encephalitis-neuromyotonia-hyperhidrosis-polyneuropathy syndromeMorvan's fibrillary chorea