Delirium is a syndrome (group of symptoms) characterized by a sudden onset of altered sensorium (decreased awareness of one's environment). confusion, and disorientation (impaired sense of time, surroundings, or known people).
Delirium occurs when the normal sending and receiving of signals in the brain becomes impaired. This impairment is most likely caused by a combination of factors that make the brain vulnerable and factors that trigger a malfunction in brain activity such as:
Symptoms of delirium often fluctuate throughout the day. Therefore, a person with delirium may have periods with no symptoms alternating with periods with severe symptoms. The primary symptoms of delirium include:
Reduced awareness of the environment
Cognitive impairment, or poor thinking skills
Other common symptoms
Factors that may make people more vulnerable to the development of delirium include:
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