Repetitive involuntary movements typically affecting the jaw, lips, tongue, arms or legs can be caused by tardive dyskinesia, a neurological disorder. Tardive dyskinesia is often seen as a side effect in patients taking antipsychotic medications used to treat certain mental illnesses.
Previously, no medications were FDA approved to specifically treat tardive dyskinesia, making prevention key. This meant that the only way help patients with tardive dyskinesia were to change their antipsychotic medication, or stop it all together, which could be harmful to patients who required treatment. See More