The nurse is caring for a client who has begun to take sertraline (Zoloft) for newly diagnosed depression. Which of the following conditions is associated with an overdose of this medication class?

The correct answer is C: Serotonin syndrome. Sertraline is a selective serotonin reuptake inhibitor (SSRI) that increases serotonin levels in the brain. An overdose can lead to excessive serotonin accumulation, causing serotonin syndrome. Symptoms include confusion, agitation, muscle rigidity, sweating, and tremors. Tardive Dyskinesia (A) is a movement disorder associated with long-term use of antipsychotic medications. Increased arousal (B) is not typically associated with sertraline overdose. Hypertensive crisis (D) is more commonly linked to monoamine oxidase inhibitors (MAOIs) rather than SSRIs.