What adverse effect should be monitored in a patient receiving haloperidol for schizophrenia?

When a patient is receiving haloperidol for schizophrenia, monitoring for muscle rigidity is particularly important due to the risk of extrapyramidal symptoms, which are common side effects of antipsychotic medications, especially first-generation antipsychotics like haloperidol. Muscle rigidity is a hallmark sign of these extrapyramidal effects, which can also include symptoms such as tremors and bradykinesia. These symptoms indicate an imbalance of dopamine in the brain, which can lead to significant discomfort and impairment in the patient's quality of life.

In addition to muscle rigidity, healthcare providers should watch for other extrapyramidal symptoms and assess the need for additional interventions. Recognizing and addressing these side effects early can help prevent further complications and allow for better management of the patient's treatment plan.