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In children, the most common cause is a stroke of the ventral pons. [9]Unlike persistent vegetative state, in which the upper portions of the brain are damaged and the lower portions are spared, locked-in syndrome is essentially the opposite, caused by damage to specific portions of the lower brain and brainstem, with no damage to the upper brain.
The sooner a stroke victim gets treated, the less brain damage is likely to happen. So, it’s important to recognize the signs of a stroke. Symptoms depend on the type of stroke and what part of ...
Symptoms of a brainstem stroke frequently include sudden vertigo and ataxia, with or without weakness. Brainstem stroke can also cause diplopia, slurred speech and decreased level of consciousness. A more serious outcome is locked-in syndrome. [citation needed]
During a stroke, blood flow to part of the brain is restricted or blocked. An ischemic stroke , brain hemorrhage , or brain tumor may cause restriction of blood flow. Lack of blood to cells in the brain prevents oxygen from getting to the neurons, and consequently causes cells to become disrupted and die.
Many risk factors can lead to a stroke, but the magnitude of risk from some of these conditions or behaviors may have a stronger association with severe stroke compared with mild stroke, according ...
Apoplexy, from the Greek word meaning "struck down with violence", first appeared in Hippocratic writings to describe this phenomenon. [249] [250] The word stroke was used as a synonym for apoplectic seizure as early as 1599, [251] and is a fairly literal translation of the Greek term.
Some level of consciousness means a person can still respond, in varying degrees, to stimulation. A person in a coma, however, cannot. In addition, PVS patients often open their eyes in response to feeding, which has to be done by others; they are capable of swallowing, whereas patients in a coma subsist with their eyes closed. [13]
A silent stroke (or asymptomatic cerebral infarction) is a stroke that does not have any outward symptoms associated with stroke, and the patient is typically unaware they have suffered a stroke. Despite not causing identifiable symptoms, a silent stroke still causes damage to the brain and places the patient at increased risk for both ...