Dementia can complicate the treatment of any medical condition. Even in those without a mental health diagnosis, behaviours and personalities change. I do not know if a PD contributes to the risk of developing what are seen as the more challenging aspects of dementia.
Clear communication in relation to the treatment of any medical condition is necessary - not just psych, do you have medical POA? Medication reviews are often helpful to ensure no untoward interactions between prescribed meds. There is a lot of controversy about the use of antipsychotics in patients with dementia (most carry a black box warning for use in the elderly) and these are the RANZCP guidelines.
Re: Can a person with dementia be treated for a personality disorder?
My dad has dementia. Recently with his senior Gerontologist, he diagnosed dad with depression, filled out a script for antidepressant BUT asked me to wait 2 weeks to see if dad improved with extra time outside in the sun, BECAUSE antidepressants can make the dementia worse and affect coordination (falls risk). I say this because a lot of personality disorders are treated with antidepressants.
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