Flytrap tongue sign

Tardive dyskinesia (TD), also known as tardive dyskinesia and persistent dyskinesia, is induced by antipsychotic drugs and is a persistent and repetitive involuntary movement. Children's oral and facial symptoms are more prominent, and the lower muscles are most often affected, showing mouth-tongue-cheek triad (BLM syndrome) or cheek, tongue, chewing syndrome, and repeated uncontrolled movements of lips and tongue, such as involuntary Continuous stereotypes of chewing, sucking, turning tongue, licking tongue, pouting and gills, crooked jaw and turning neck, sometimes the tongue suddenly involuntarily protrudes out of the mouth, called fly-catcher tongue, which occurs in severe cases Unclear articulation and swallowing disorders.

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