Short answer · Medically reviewed summary · Last updated: 2026-05-08
Locked-in syndrome is most commonly known by that name, though it is also frequently referred to as pseudocoma or cerebromedullary disconnection. In medical literature, it is formally classified as a state of quadriplegia and cranial nerve paralysis with preserved consciousness and vertical eye movement. What are the primary synonyms for Locked-in syndrome? Because Locked-in syndrome was first described in detail by Plum and Posner in 1966, it has collected several descriptive medical labels over the decades.
Locked In Syndrome synonyms
Other names for Locked In Syndrome: synonyms, acronyms and related terms used by doctors and patients.
Locked-in syndrome is most commonly known by that name, though it is also frequently referred to as pseudocoma or cerebromedullary disconnection. In medical literature, it is formally classified as a state of quadriplegia and cranial nerve paralysis with preserved consciousness and vertical eye movement.
What are the primary synonyms for Locked-in syndrome?
Because Locked-in syndrome was first described in detail by Plum and Posner in 1966, it has collected several descriptive medical labels over the decades. Clinicians and researchers often use the following terms interchangeably in clinical documentation:
- Pseudocoma: A term reflecting the misleading appearance of unconsciousness.
- Cerebromedullary disconnection: Describes the anatomical disruption between the brain and the spinal cord.
- Ventral pontine syndrome: Refers to the specific location of the lesion (the base of the pons) that typically causes the condition.
- De-efferented state: A neurophysiological term highlighting the loss of motor output despite intact sensory and cognitive input.
How is Locked-in syndrome classified in medical databases?
To ensure consistency in global healthcare, Locked-in syndrome is indexed under specific codes. In the International Classification of Diseases (ICD-10), it is often categorized under G83.2 (monoplegia of upper limb, as part of broader motor deficits) or under codes for pontine hemorrhage. On Orphanet, the condition is cataloged as ORPHA:1255, and it is tracked in the OMIM database as a manifestation of brainstem pathology. These codes help researchers aggregate data for the small number of individuals worldwide, including the 2 members currently sharing their experiences on DiseaseMaps.org.
Why are there so many names for this condition?
The variety of names for Locked-in syndrome stems from different clinical perspectives. Neurologists may prefer "ventral pontine syndrome" to denote the anatomical site of injury, while psychiatrists or rehabilitation specialists might use "pseudocoma" to emphasize the diagnostic challenge of distinguishing the condition from a vegetative state. Despite these historical variations, Locked-in syndrome is the universally accepted terminology in modern medical practice.
Next steps
- Consult with a board-certified neurologist to confirm the specific etiology of your Locked-in syndrome diagnosis.
- Join specialized support platforms like DiseaseMaps.org to connect with the global community.
- Request a formal copy of your medical records to ensure all diagnostic codes match the current international standards.
Medical disclaimer: This information is for educational purposes only and does not replace professional medical advice, diagnosis, or treatment.
References
- Orphanet: Locked-in syndrome (ORPHA:1255)
- NIH Genetic and Rare Diseases Information Center (GARD): Locked-in syndrome
- National Institute of Neurological Disorders and Stroke (NINDS)
- OMIM (Online Mendelian Inheritance in Man) database
