After what duration of treatment can patients develop tardive dyskinesia?

Tardive dyskinesia is a serious neurological side effect that commonly arises from the prolonged use of antipsychotic medications, particularly the first-generation (typical) antipsychotics. It is characterized by involuntary, repetitive movements, often involving the face, tongue, and limbs.

The onset of tardive dyskinesia typically occurs after months or even years of continuous treatment with these medications, making the correct answer refer to this longer duration. While some symptoms might appear earlier during treatment, the hallmark of tardive dyskinesia is its delayed onset, developing after sustained exposure to the medication. Therefore, it is crucial for healthcare providers to monitor patients on long-term antipsychotic treatment carefully, being vigilant for any signs of this condition.

In contrast, the other options suggest a more immediate onset, which does not align with clinical observations of how tardive dyskinesia develops over time. Immediate effects from medication usually manifest as acute extrapyramidal symptoms, whereas tardive dyskinesia represents a chronic side effect coming to light after extended use.