Final answer:
Haloperidol (Haldol) can cause extrapyramidal symptoms, which are movement disorders affecting involuntary movements due to its effect on dopamine activity in the basal nuclei of the brain.
Step-by-step explanation:
Haloperidol (Haldol) can cause extrapyramidal symptoms (EPS). EPS are a group of movement disorders that affect the extrapyramidal system, responsible for coordinating involuntary movements. This includes symptoms such as tremors, rigidity, bradykinesia (slowness of movement), and acute dystonias. Haloperidol affects dopamine activity, which is a critical component of the basal nuclei's function in the brain, leading to these side effects. Other possible effects from neuroleptic drugs, such as haloperidol, can include sedation, agitation, or reduced emotional reactivity, but these are not typically classified under EPS.