Understanding Delirium

Delirium is a sudden change in a person’s attention, awareness, thinking, and behavior. It can cause confusion, disorientation, hallucinations, agitation, unusual behavior, or even difficulty recognizing familiar people.

Delirium can happen for many reasons, including infections, dehydration, serious illness, changes in medications, reactions to medications, pain, or problems with the body’s chemistry.

It can happen to anyone, but the risk is higher among older adults, people who are seriously ill, people in hospitals or intensive care, and people taking multiple medications. People with certain medical conditions or underlying brain problems can also be more vulnerable.

One of the biggest concerns is that delirium can sometimes look like a psychiatric condition. A person who is suddenly confused, hallucinating, or behaving differently may be sent to a psychiatric setting when the underlying cause actually needs to be medically investigated.

That is why recognizing the signs early is so important.

Family members can play an important role because they may notice changes that healthcare providers don’t immediately see. If someone suddenly becomes confused, doesn’t know where they are, starts seeing or hearing things that aren’t there, becomes unusually agitated or sleepy, or experiences a major change in behavior, don’t simply assume it’s a mental-health problem.

Ask questions.

What changed? When did it start? Could a medication be causing it? Could there be an infection, dehydration, pain, or another medical problem?

Most importantly, don’t be afraid to advocate for a complete medical evaluation.

We also need better education for families, caregivers, and healthcare professionals so that delirium can be recognized earlier and treated according to its underlying cause.

Knowing the signs could help prevent unnecessary suffering, inappropriate treatment, and potentially dangerous situations for vulnerable people.

Delirium is real. The signs are important. And knowing what to look for can help families speak up and make sure people receive the right care.