It is important for the clinician to recognize that elderly patients may present with drug-induced psychosis particularly with:
A. Beta blocker drugs
B. Anticholinergic drugs
C. Antibiotics
D. Antiviral agents
ANS: B
In addition to street drugs or commonly abused drugs, anticholinergic agents can precipitate delirium, especially in elderly patients. Anticholinergic medications can cause a patient to present with hyperthermia, blurred vision, dry skin, facial flushing, and delirium. The mnemonic "hot as a pepper, blind as a bat, dry as a bone, red as a beet, and mad as a hatter" can be used to describe this toxic state (Shea, 1998). It is important to note that anticholinergic syndrome may be incomplete or hidden by other medications, such as opiates, and not present as a classic anticholinergic syndrome.
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