Final answer:
Elderly patients with dementia are at a higher risk of strokes and overall mortality when treated with antipsychotics, with some drugs affecting motor control regions of the nervous system.
Step-by-step explanation:
The risk that is elevated in elderly patients with dementia who are given antipsychotics is that of strokes and overall mortality. The neuroleptic drugs, which are often used as antipsychotics, can cause side effects such as reduced motor control, as seen with the medication-induced changes in an elderly woman's ability to control fine movements. This loss of motor control suggests that the regions of the nervous system affected by drugs like haloperidol are critical. In dementia patients, particularly those with conditions like Alzheimer's disease, the use of such medications must be very carefully considered due to the increased susceptibility to side effects, which in severe cases can be life-threatening.