Journal
CLINICAL EEG AND NEUROSCIENCE
Volume 39, Issue 1, Pages 39-42Publisher
EEG & CLINICAL NEUROSCIENCE SOC (E C N S)
DOI: 10.1177/155005940803900112
Keywords
akinesia; catalonia; epilepsy; frontal lobe; Parkinson disease
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A report of severe akinetic episodes in patients with Parkinson disease (PD) has been the stimulus for the following discussion of akinesia and its variants. Severe persistent alkinesia may occur in frontal lobe impairment. Therefore, it is likely that extension of the Parkinsonian dysfunction into the frontal lobe causes severe akinesia which should be separated from the very common Parkinsonian hypokinesia. Another very common clinical phenomenon of PD is sudden freezing. Hence the frontal lobe-hardly regarded as a region of special interest in the realm of PD-can be the cause of severe and dangerous complications of PD. The term arrest reaction or motor arrest denotes a similar freezing. It is recommended to restrict these terms to certain forms of frontal lobe epilepsy. This discussion of hypokinetic and akinetic states should also include catatonia: a form of schizophrenia with a special type of akinesia. Though without major neuropathological substratum, this condition can, in extremely rare cases, lead to severe hyperthermia and fatal outcome (presumably via hypothalamic dysfunction).
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