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“Dementia” in the emergency department: can you do anything about it?

Dementia versus delirium is an age old question in emergency medicine. Many studies have been conducted seeking a means of differentiation. First, is there a way to differentiate, and second, is dementia always irreversible? Dementia is often thought to be due to a chronic disease, but studies suggest 20-30% of dementia cases are due to a reversible cause. This post looks at these questions and more.