Delirium can be caused by many medical conditions. It describes the confused state of mind in a person. With delirium, the person may be unable to maintain attention, and thinking may be disorganized. The brain is unable to process information in the proper way.
A person with delirium is unable to focus attention or reply correctly to questions. Delirium usually comes on quickly and needs to be assessed and treated right away. It can usually be turned around once the cause is known. Delirium is more common in older people and may uncover dementia that wasn't noticed before.
Delirium can be caused by many things including: