A 50 year old woman with schizophrenia who has been taking a antipsychotic drug for the past 3 years has begun to show involuntary chewing and lip-smacking movements. Which can be the most likely possibility?

Ans. D. Tardive dyskinesiaTardive dyskinesia (TD) is a disorder that results in involuntary, repetitive body movements. This may include grimacing, sticking out the tongue, or smacking the lips.Additionally, there may be rapid jerking movements or slow writhing movements