A woman has been treated with chlorpromazine for several years. Lately she seems to be chewing gum all the time and her arms are always in motion. She has begun to display twitching facial tics. This is an example of:

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The symptoms described, such as chewing gum all the time, arms always in motion, and twitching facial tics, are indicative of tardive dyskinesia. Tardive dyskinesia is a side effect of long-term use of antipsychotic medications, like chlorpromazine, characterized by involuntary, repetitive body movements.

A Woman Has Been Treated with Chlorpromazine for Several Years