Confusion and delirium
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Definition
Confusion is a loss of orientation (not knowing where, when, who and what you are), often combined with a loss of memory. Delirium is a short term state of confusion, accompanied with altered consciousness.
Epidemiology
Very common, especially in the elderly, or very ill.
Pathophysiology
As far as we can ascertain:
- If your body is a bit messed up, ie. electrolyte imbalances etc, you get confused.
- If your brain isn't working properly, ie. alzheimer's disease, etc, you get confused.
- If your brain is getting squashed, ie. massive brain tumour, etc, you get confused.
Clinical and Associated Features
For the purposes of this section, we will split it into dementia and delirium:
Dementia
- Chronic onset and progressive
- Usually primary
- No sleep problems
- Relatively constant state
Delirium
- Acute Onset
- Secondary
- Sleep disturbance
- Fluctuates rapidly