Locked-in syndrome
Locked-in syndrome (LIS), also known as pseudocoma, is a condition in which a patient is aware but cannot move or communicate verbally due to complete paralysis of nearly all voluntary muscles in the body except for vertical eye movements and blinking. The individual is conscious and sufficiently intact cognitively to be able to communicate with eye movements. Electroencephalography results are normal in locked-in syndrome. Total locked-in syndrome, or completely locked-in state (CLIS), is a version of locked-in syndrome wherein the eyes are paralyzed as well. Fred Plum and Jerome B. Posner coined the term for this disorder in 1966.
| Locked-in syndrome | |
|---|---|
| Other names | Cerebromedullospinal disconnection, de-efferented state, pseudocoma, ventral pontine syndrome |
| Locked-in syndrome can be caused by a stroke at the level of the basilar artery denying blood to the pons, among other causes. | |
| Specialty | Neurology, Psychiatry |
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