What should be monitored closely in patients receiving nystatin for oral candidiasis?

Monitoring for signs of allergic reaction in patients receiving nystatin for oral candidiasis is crucial because while nystatin is generally well-tolerated, some individuals may develop hypersensitivity. Allergic reactions can manifest as rashes, swelling, or difficulty breathing, and timely recognition of these symptoms is essential for ensuring patient safety and prompt intervention.

The other monitoring options, while relevant in different patient scenarios, are not as directly connected to nystatin use. Weight gain is more pertinent in different contexts, such as with medications affecting metabolic pathways or appetite. Additionally, changes in vision or blood pressure are not typically associated with nystatin treatment and are more relevant for different classes of medications. Thus, focusing on the potential for allergic reactions ensures that any adverse responses are addressed swiftly.