A nurse is reinforcing teaching with a client who is about to undergo electroconvulsive therapy. The nurse should explain to the client that which of the following adverse reactions can occur following the procedure?

A. Neck pain can occur in some patients following electroconvulsive therapy (ECT) due to muscle tension or positioning during the procedure. However, it is not a common or expected adverse reaction associated with ECT, so it is not the primary concern to address. B. Temporary memory loss is a well-documented adverse reaction following ECT. Patients may experience difficulties with short-term memory, particularly related to events that occurred around the time of the treatment. This memory loss is usually temporary, but it can be distressing for some individuals. C. Voice alteration is not typically associated with ECT. Although some patients may experience hoarseness or changes in vocal quality due to intubation or anesthesia, this is not a direct result of ECT itself and is not commonly mentioned in the context of ECT side effects. D. Tingling of the scalp is not a recognized adverse reaction to ECT. Patients may experience various sensations, but tingling is not a common or documented response. The primary focus should be on more significant effects, such as temporary memory loss and potential confusion immediately following the treatment.