Definition of Locked-in-state, Catatonia and Hysterical pseudocoma

In this article, we will discuss the Definition of Locked-in-state, Catatonia and Hysterical pseudocoma. So, let’s get started.


Locked-in-state: It is a state of pseudocoma in which patient appears to be unconscious, immobile and unresponsive but can open and move the eyes on command. Often these patients communicate with movement of eyes, a form of ‘sign language’. These individuals are thus locked in, or imprisoned within their own bodies. It results from infraction or hemorrhage of ventral pons due to basilar artery occlusion.

Catatonia: It is hypomobile, mute syndrome associated with major psychosis. In its typical form, the patient appears awake with eyes open but make no voluntary or responsive movements. The characteristic feature is that the limbs maintain their posture when lifted or moved in any position by the examiner but may also show waxy flexibility.

Hysterical pseudocoma: It indicates voluntary attempt to appear comatosed. Patient resists to examination. Eyelid elevation is actively resisted. Blinking occurs to visual threat when the lids are held open. The eyes move concomitantly with head rotation.

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