This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharmacotherapy Management of Children and Adolescents, Subject name: Psychiatry
A patient of schizophrenia treated for 5 years developed perioral movements. Likely diagnosis is: 
Select and explain. 
A. Tardive dyskinesia, B. Muscular dystonia, C. Akathisia, D. Malignant neuroleptic syndrome
A: Tardive dyskinesia
Answer: A: Tardive dyskinesia 
Explanation: Ans. A. Tardive dyskinesiaTardive dyskinesia is the abnormal movement of tongue, lips or buccal cavity after long time intake of antipsychotic drug intake. It develops after minimum of six months of antipsychotic intake.