A 7-point scale (0-7) was derived from responses to the Confusion Assessment Method for the ICU and Richmond Agitation-Sedation Scale items. [ncbi.nlm.nih.gov]

In rare cases, new medications may have an unintended and unexpected side effect of agitation or sleeplessness. Low Oxygen Levels: If the patient is not getting enough oxygen, agitation and confusion can be one of the first signs. [verywell.com]

Agitation, delusions, behavioural disorders and hallucinations (often visual) may complicate the picture. [medicalguidelines.msf.org]

The main signs of delirium are sudden changes in consciousness or state of arousal, such as feeling drowsy or agitated. [cancer.net]

Signs And Symptoms All types of mental confusion share similar signs and symptoms, including: Depression Delusions Hallucinations Restlessness, anxiety, irritability Disturbed sleeps Clouded consciousness or awareness Decreased or no attention span Loss [symptomfind.com]

People who have had delirium say they: felt unsure of their whereabouts worried that other people were trying to harm them felt afraid, irritable, anxious or depressed felt slow and sleepy felt agitated and restless had vivid dreams that continued when [dementiauk.org]

Here are some of the things to watch out for: Sudden change in ability to speak, especially long pauses or slurred words Sudden changes in emotion; for instance, quick shifts from happy to irritated Changes in behavior or personality Changes in mood, [cancer.org]

Very serious cases of bleeding in someone who maybe is taking a lot of ibuprofen for some pain and it causes some stomach irritation and bleeding. So those are the primary things I'm looking at, and then I might look at their oxygen level as well. [healthcare.utah.edu]

Lamkahouan, Houston Chronicle, "One way a group is fighting that irritating 'Pearl land' mispronunciation," 10 Feb. 2020 No guardrails’ on Trump’s foreign policy The impeachment proceedings pulled back the curtain on Trump’s approach to foreign policy [merriam-webster.com]