A nurse is caring for a client who has dementia. The provider has prescribed a protease inhibitor medication for the client. The nurse should identify that this medication is given to treat which of the following types of dementia?

Protease inhibitors are antiretroviral medications used to treat HIV infection by blocking the protease enzyme that the virus needs to replicate. When dementia develops as a complication of HIV infection — known as HIV-associated neurocognitive disorder (HAND) or HIV-associated dementia — managing the underlying viral infection with antiretroviral therapy, including protease inhibitors, is a central component of treatment. This is distinct from other types of dementia: Lewy body dementia is associated with abnormal alpha-synuclein protein deposits and is managed with cholinesterase inhibitors, with caution around antipsychotics. Parkinson's disease dementia shares pathophysiology with Lewy body dementia and is not treated with antiretroviral agents. Vascular dementia results from cerebrovascular disease and is managed by controlling cardiovascular risk factors. Because protease inhibitors are specific to HIV treatment, a provider prescribing them for a client with dementia clearly indicates that the dementia is secondary to HIV infection. Students sometimes confuse protease inhibitors with cholinesterase inhibitors (used for Alzheimer's and Lewy body dementia), but these are entirely different drug classes with distinct mechanisms and indications.