Which side effect of antipsychotic medications is characterized by involuntary repetitive movements?

• A. Akinesia
• B. Akathisia
• C. Pseudoparkinsonism
• D. Tardive dyskinesia

Answer: (D)

Tardive dyskinesia is characterized by involuntary, repetitive movements, which can include facial grimacing, tongue movements, lip smacking, and other abnormal movements of the limbs. This condition is a potential side effect of long-term use of antipsychotic medications, particularly the first-generation antipsychotics. Unlike other movement disorders associated with antipsychotic use, tardive dyskinesia often develops after prolonged exposure to these drugs and can be persistent even after discontinuation of the medication. Recognizing this side effect is crucial for those in healthcare, as it can significantly impact a patient's quality of life and ability to engage in therapy or daily activities.