[‚süd·ō′pär·kən·sə‚niz·əm] (medicine) A reversible syndrome resembling parkinsonism that may result from the dopamine-blocking action of antipsychotic drugs. Also known as drug-induced parkinsonism.
pseudoparkinsonism
pseu·do·par·kin·son·ism
(sū'dō-pahr'kin-sŏn-izm) Adverse effect of drugs that causes symptoms resembling parkinsonism such as tremor, masklike facies, drooling, rigidity, and stiff gait.