Origin and Etymology of tush. Middle English tusch, from Old English tÅ«sc; akin to Old Frisian tusk tooth, Old English tÅth tooth. First Known Use: before 12th century.
The leading cause of extrapyramidal syndrome is psychiatric medication. Antipsychotic drugs and some drugs used to treat depression commonly cause extrapyramidal symptoms. Patients who take dopamine blockers can also develop this condition.
Side effects of PD medications. In the majority of PD cases, hallucinations and delusions occur as a side effect of drug therapy. All PD medications can potentially cause these symptoms: Classic PD medications (i.e., Sinemet and dopamine agonists) are designed to increase dopamine levels, improving motor symptoms.